Race car damping 2. Fig-1 quarter car model.
|
|
- Bertha Hawkins
- 6 years ago
- Views:
Transcription
1 Race car daping A nuber of issues ago I wrote an article on exploring approaches to specify a race car daper. This article is the second in that series and we shall be following on fro where we left off. In particular in this article we will be exploring the use of daping ratios and what they tells us and ore iportantly how we can use it. efore we get into this let s recap where we are at with the first article. In the first article I presented the exaple of controlling a quarter car ass being subjected to a sinusoidal road input. In that article we explored what daping would have to be used to control this and what we could do via an inerter. The conclusion of this was that daping alone wouldn t get the job done and an inerter would only work at a specified frequency. However we did leave the article on the note that we could approxiate what we wanted to do by approxiating the job with daping ratios. This is where we will take up the discussion. As a precursor to what we will discuss let e go through the two schools of daping I have encountered over y career. The first school dictates all the daper does is control the oscillation of the wheel and that s it. The second school regards the daper as an essential eleent of the setup of the race car and in addition to controlling the oscillation it is used as a vital tool to control chassis attitude and control tyre loads. During y career I have varied between both schools of thought and I trust what we will discuss here ight provide soe answers to this conundru. Let s talk about who we can characterise dapers through daping ratios. As before we will be using the ¼ car odel approxiation to draw our line in the sand. I realise that a real car functions with a chassis and four contact patches. However bare with e this is a very useful approxiation. To refresh our eories Let s look at the quarter car odel, Fig-1 quarter car odel.
2 Looking at this we have a syste with 4 degrees of freedo. ody oveent and velocity and wheel oveent and velocity. To solve this properly we need to start solving eigenvalues and eigenvectors and this doesn t lend itself to nice hand calculations. At this point we need to ake soe approxiations. The approxiation that we are going to ake is, << << T (1) t Please note all the rates we are about to quote are going to be in wheel rates. The astute reader will instantly recognise that this is perfectly valid for a road car, but we could run into trouble with an open wheeler applications where the spring rate of the chassis are of the sae agnitude as the tyre, or in a V8 Supercar or NASCAR where the unsprung asses are quite high. However bare with e. What we are constructing here is a rough rule of thub. You ll see its power as we carry on. In this case the governing equations of the sprung ass reduce to, x = x C x () What this eans in layan s ters is that the acceleration of the sprung ass is the su of the spring rate of the daper ties the daper oveent and the daping rate ties the daper velocity. The daping rate is the slope of the daping curve at that particular daping velocity. Let e illustrate this in Figure, Fig- Evaluating a daper slope fro a typical force vs daping curve
3 The beautiful thing about equation () is that we can now do a laplace transfor on this. The end results are shown below, C = s + s + (3) If we copare this to the ideal second order syste with natural frequency ω and daping ratio ζ it is seen that, ω = s + ζ ω s + (4) When equations (3) to (4) are copared we know have the tools to specify our desired daping rate in ters of daping ratios and natural frequency, = ω (5) C = ω C ζ = ω ζ (6) This is the first point of the analysis. Equation (5) specifies the natural frequency in rad/s of the syste (To convert to Hz divide by approxiately ), and equation (6) eans a daper rate based on the daping ratio that is desired can be specified. It s at this point when calculating you need to be really precise with your units. Everything here needs to be in strict SI units. That is asses in kg, Spring rate in N/ and daping rate in N//s. Also all rates are in Wheel rates not at the daper. I ake absolutely no apologies for this. esides as far as I a concerned any easureent that has the slug as it s easure of density is intellectually flawed. efore we get into this in further detail why don t we do a worked exaple of this. For this particular case let s outline the following variables,
4 Table-1 Values for ¼ car exaple Ite Value Motion Ratio (Daper/Wheel) 1 Spring Rate 175 N/ (1lbf/in) Daping Rate 1333 N//s ¼ car ass 157 kg The daping rate was actually calculated fro Fig- and I would invite the interested reader to repeat the calculation. Let s now work through the calculation of the natural frequency and the daping ratio, ω = MR MR C ζ = = ω b = 1 = rad / s =.3 (7) As far as I a concerned the real power of this is that it gives us a powerful way of non diensionalising what is going on with a daper. If you characterise a daper this way the oent you do a spring change you can specify a daper, which in theory has identical characteristics. I should also add this applies both in bup and rebound. Obviously when back calculating for rebound when re working your nubers reeber to ultiply the slope by 1, if using a standard force vs daper curve, that shows bup positive and rebound negative. Now that we have gone to all this trouble to calculate daping ratio what does all this actually ean. To get to the heart of the atter we need to return to what our quarter car is going to do when we apply a step input to it. The daping ratios will actually tell you what the car is going to do. This is illustrated in Fig-3,
5 Fig-3 Second order syste response to a step input. Reviewing this graph is very interesting. At low daping ratios the ¼ car odel is decidedly underdaped and it takes a long tie to return to an equilibriu state. However think about what this is ideal for. If we are hitting a bupy bit of the circuit we actually want the car to do this. When the daping ratios hit about.5.7 the car s oscillation is rearkable decreased. Not so great with dealing with a bups but ideal for controlling the body when we are pitching and rolling. Daping ratios greater than this are ideally placed to force the car to alost act like a spring as we discussed in our previous articles. However be warned there are soe consequences for over doing it. On the back of this I cae up with a rough daper guide that I actually outlined in y first article. Now that we have discussed this in further detail let e outline it in further detail. Table Rough outline to daping ratios Daping Ratio Range What this applies to.3.4 Ideal for filtering out bups.5 1. This deals with body control This deals with extree body control/driving teperature into the tyres. Ared with this knowledge let s look at the first daper curve we saw in Fig-. Assuing the sae nubers fro Table 1, I ll work out the daping ratios for both bup and rebound. This is presented in Table 3
6 Table-3 Daping ratios for Daper presented in Fig- Velocity (/s) Daping ratio in bup Daping ratio in rebound Table 3 presents soe enlightening insights into what this daper is trying to do. First things first the daping ratios fro tell e iediately this is a high downforce car. The high daping ratios are tell tale signs this is a high downforce car. The high daping ratios iediately suggest that body control is paraount. Looking at the bup at 13/s the daping ratio jups to.3. This indicates the daper engineer is trying to give soe feel to the car as well as load the tyres. eyond this range the dapers blow off to a low ratio to allow the car to ride the bups. In rebound fro 13 5 /s the daping ratio is.7. This tells e body control is still paraount. eyond the daping ratios blow off to.3. This tells e this is designed for the bups. I think the reader is fast starting to get the idea that daping ratio is not just a useful paraeter but it can tell you an awful lot about what you want both the chassis and the tyre to do. As a rough rule of thub the higher the daping ratio the better it is for both controlling the chassis and putting teperature into the tyre. The lower it is the better it is for riding bups. However the question has to be asked how do we deterine what we want and need. One is experience and a bit of infored intuition. Let e illustrate with an exaple say you have a low downforce car going over a circuit with a lot of undulations. In general ters for a car without a lot of downforce you would actually like lowish daping nubers in rebound Say daping ratios in the order of.3.5. However let s just say your rounding out a turn with an undulation. It could be desirable to actually have a higher daping ratio in rebound to keep the car connected with the ground? I not saying this is what you need to do I just asking the question so you can think about it. The second ethod is to use siulation software to aid us in deterining this. Indeed it was this very question of evaluating the appropriate dapers that lead to the creation of ChassisSi. Indeed when I was evaluating what lap tie algorith to use it was this reason that I disissed the pseudo static lap tie approach. To illustrate what I a taking about let e evaluate too totally different types of dapers for the front of an F3 car. The results of the siulation is shown below in Fig 4,
7 Fig-4 Siulation results for two totally different dapers This is a bit of an obvious exaple because this was a very bupy circuit and I set the second daper very stiff in both bup and rebound, but this none the less shows how you can use siulation to look at different configurations and see the ipact they can have on vehicle perforance. For exaple in this trace we can see very quickly the ipact this has had on loads, corner speed and teperatures (The red is the baseline and the black is the daper change). I would wager the loss in teperature is due to the fact the apex corner speed has dropped by k/hr. In closing then while we haven t achieved the grand unified theory of race car daping we nonetheless have delved into how useful the daping ratio can be a very effective tool. Not only does it non diensionalise the way we can look at daping but we can use it too force the behaviour of the race car to get it too what we wanted too. Is this a agic bullet? No it isn t however if properly utilised it is a very powerful tool to investigate what is going on with the car. It will also give us soe good for thought for the next instalent in this series on race car daping.
Projectile Motion Lab (2019)
Nae: Date: Partner(s): Period: Projectile Motion Lab (2019) Object: Measure the velocity of a ball using two Photogates and coputer software for tiing. Apply concepts fro two-diensional kineatics to predict
More informationAn improvement in calculation method for apparel assembly line balancing
Indian Journal of Fibre & Textile Research Vol.38, Septeber 2013, pp 259-264 An iproveent in calculation ethod for apparel assebly line balancing F Khosravi 1, a, A H Sadeghi 1 & F Jolai 2 1 Textile Departent,
More informationAn Indian Journal FULL PAPER ABSTRACT KEYWORDS. Trade Science Inc.
[Type text] [Type text] [Type text] ISSN : 0974-7435 Volue 10 Issue 24 BioTechnology 2014 An Indian Journal FULL PAPER BTAIJ, 10(24), 2014 [15430-15434] Mechanical analysis of tennis racket and ball during
More informationS L G. Chapter 12: The Behavior of Gases. I. First Concepts a. The 3 states of matter most important to us: solids, liquids, and gases.
Chapter : he ehaior of Gases I. First Concepts a. he 3 states of atter ost iportant to us: solids, liquids, and gases. S L G b. Real Gases and Ideal Gases i. Real gases exist, ideal gases do not ii. Under
More informationMODELLING THE EFFECTS OF PEDESTRIANS ON INTERSECTION CAPACITY AND DELAY WITH ACTUATED SIGNAL CONTROL
MODELLING THE EFFECTS OF PEDESTRIANS ON INTERSECTION CAPACITY AND DELAY WITH ACTUATED SIGNAL CONTROL ABSTRACT Zong Tian, Ph.D., P.E. Feng Xu, Graduate Assistant Departent of Civil and Environental Engineering
More informationSimulating Method of Ship s Turning-basins Designing
International Journal on Marine Navigation and Safety of Sea Transportation Volue 5 Nuber 2 June 2011 Siulating Method of Ship s Turning-basins Designing J. Kornacki Szczecin Maritie University, Szczecin,
More informationAN OPTIMIZATION MODEL AND ALGORITHM OF STUDENTS' PHYSICAL FITNESS TEST SEQUENCE
28 th February 203. Vol. 48 3 2005-203 JATIT & LLS. All rights reserved. ISSN: 992-8645 www.jatit.org E-ISSN: 87-395 AN OPTIMIZATION MODEL AND ALGORITHM OF STUDENTS' PHYSICAL FITNESS TEST SEQUENCE JINSONG
More informationUnit Activity Answer Sheet
Geoetry Unit Activity Answer Sheet Unit: Extending to Three Diensions This Unit Activity will help you eet these educational goals: Matheatical Practices You will use atheatics to odel real-world situations.
More informationIntegration of Lean Approaches to Manage a Manual Assembly System
Open Journal of Social Sciences, 204, 2, 226-23 Published Online Septeber 204 in SciRes. http://www.scirp.org/journal/jss http://dx.doi.org/0.4236/jss.204.29038 Integration of Lean Approaches to Manage
More informationRipple Tank: Instruction Manual
Ripple Tank: Instruction Manual The Ripple Tank coprises the following individual parts: Assebly of the ripple tank: Water Tank.......1pcs Detachable legs....3pcs Angular holders.......2pcs Plate fitting...1pcs
More informationThe Handtmann Armaturenfabrik. Safety without compromise. Safety valves for liquids, gases, and steam
The Handtann Araturenfabrik Safety without coproise for liquids, gases, and stea f Safety Valves FoodSafe Tradition Meets Innovation fro Handtann are first choice for hygienically sensitive product areas
More informationRecommendations on Two Acceleration Measurements with Low Strain Integrity Test
Recoendations on Two Acceleration Measureents with Low Strain Integrity Test Liqun Liang, PhD., P.E., 1 Scott Webster, P.E., 2 and Marty Bixler, P.E. 3 1 Pile Dynaics Inc., 3725 Aurora Rd, Cleveland, Ohio
More informationIMPROVED SPECTRAL WAVE MODELLING OF WHITE-CAPPING DISSIPATION IN SWELL SEA SYSTEMS
Proceedings of OMAE 2004: 23rd International Conference on Offshore Mechanics and Arctic Engineering 20-25 June 2004, Vancouver, Canada OMAE2004-51562 IMPROVED SPECTRAL WAVE MODELLING OF WHITE-CAPPING
More informationWave Force on Coastal Dike due to Tsunami
Wave Force on Coastal Dike due to Tsunai by Fuinori Kato 1, Shigeki Inagaki 2 and Masaya Fukuhaa 3 ABSTRACT This paper presents results of large-scale experients on wave force due to tsunai. A odel of
More informationNumerical simulation on fluctuation in wellhead pressure of geothermal well
Wellhead pressure (MPa) PROCEEDINGS, Thirty-Ninth Workshop on Geotheral Reservoir Engineering Stanford University, Stanford, California, February 4-6, 014 SGP-TR-0 Nuerical siulation on fluctuation in
More informationHAND CALCULATION METHOD FOR AIR SUPPLY RATES IN VESTIBULE PRESSURIZATION SMOKE CONTROL SYSTEM
International Journal on ngineering Perforance-Based Fire odes, Volue, Nuber, p.7-40, 999 HAND AUATION MTHOD FO AI SUPPY ATS IN PSSUIZATION SMOK ONTO SYSTM M. Kujie Nikken Sekkei td, 4-6- Koraibashi, huo-ku,
More informationOperating Instructions
Table of Contents Table of Contents... 2 Conventions Used in this Manual... 4 1. Introduction...5 1.1. Notes on this anual... 6 1.2. Modes Covered by this Manual... 6 2. Basic Operation...7 2.1. Turning
More informationSEMI-SUBMERSIBLE YACHT CONCEPT: RETHINKING BEHAVIOUR AT ANCHOR AND GENESIS OF THE COMFORT DRAFT
24 th International HISWA Syposiu on Yacht Design and Yacht Construction 14 and 15 Noveber 2016, Asterda, The Netherlands, RAI Asterda SEMI-SUBMERSIBLE YACHT CONCEPT: RETHINKING BEHAVIOUR AT ANCHOR AND
More informationEROSION AND ACCRETION ON CURVED BEACH
EROSION AND ACCRETION ON CURVED BEACH Kideok Do 1, Nobuhisa Kobayashi 2 and Kyung-Duck Suh 3 The perforance of a large nourishent project on Bethany Beach, Delaware is evaluated using available beach profile,
More informationName: Answer Key Date: Regents Physics. Waves
Nae: Answer Key Date: Regents Physics Test # 13 Review Waves 1. Use GUESS ethod and indicate all vector directions. 2. Ters to know: echanical wave, transverse wave, longitudinal wave, surace wave, electroagnetic
More informationPetr 311 Wellbore pressures and Kick Control
etr 311 Wellbore pressures and Kic Control Reeber b. 05D Consider the wellbore static hydraulic syste The pressures in the drill string and the annulus can be represented as a U-tube. The su of the pressures
More informationDewpoint Internal Gas Pressure and Chemical Composition of the Gas Within the Free Volume of DWPF Canistered Waste Forms (U)
a WSRCMS960244 OOdF 940804(cg Dewpoint Internal Gas Pressure and Cheical Coposition of the Gas Within the Free Volue of DWPF Canistered Waste Fors (U) by J R Harbour Westinghouse Savannah River Copany
More informationA parametric study of an offshore concrete pile under combined loading conditions using finite element method
32 A paraetric stud of an offshore concrete pile under cobined loading conditions using finite eleent ethod J.A. Eicher, H. Guan 1 and D. S. Jeng School of Engineering, Griffith Universit Gold Coast Capus,
More informationBasics of Flow measurement using Hot-film anemometer
Basics of Flow easureent using Hot-fil aneoeter Version 1.0 1/9 Inhaltsverzeichnis: 1. Definitions 1.1. Air Velocity 1.2. Aount (of Gas) 1.. Flow 1..1. Mass flow rate 1..2. Voluetric flow rate 1... Standard
More informationNUMERICAL STUDY OF WAVE-CURRENT INTERACTION USING HIGH RESOLUTION COUPLED MODEL IN THE KUROSHIO REGION
NUMERICAL STUDY OF WAVE-CURRENT INTERACTION USING HIGH RESOLUTION COUPLED MODEL IN THE KUROSHIO REGION Hitoshi TAMURA Frontier Research Center for Global Change/JAMSTEC 373- Showaachi, Kanazawa-ku, Yokohaa,
More informationA Numerical Prediction of Wash Wave and Wave Resistance of High Speed Displacement Ships in Deep and Shallow Water
การประช มว ชาการเคร อข ายว ศวกรรมเคร องกลแห งประเทศไทยคร งท 18 18- ต ลาคม 547 จ งหว ดขอนแก น A Nuerical Prediction of Wash Wave and Wave Resistance of High Speed Displaceent Ships in Deep and Shallow Water
More informationDetermining the Limit Performance of a GP2 Race Car: from Reality to Multibody and Analytical Simulation - Part II.
Determining the Limit Performance of a GP2 Race Car: from Reality to Multibody and Analytical Simulation - Part II Giuseppe Callea BhaiTech Technology BhaiTech Technology 1 Company Presentation Brief Recall
More informationPreventive Strike vs. False Targets in Defense Strategy
International Journal of Perforability Engineering Vol. 8, No., July, pp. -. RAMS Consultants Printed in India Preventive Strike vs. False Targets in Defense Strategy GREGORY LEVITIN and KJELL HAUSKEN.
More informationSimulating the effects of fatigue and pathologies in gait
Siulating the effects of fatigue and pathologies in gait T Koura 1, A Nagano, H Leung 3 and Y Shinagawa 4 1,3 Departent of Coputer Engineering and Inforation Technology, City University of Hong Kong, 83
More informationC6Hi (g) 6 H2O + 6 C02(g) + energy
Experient Cell Respiration 110 Cell respiration refers to the process of converting the cheical energy of organic olecules into a for iediately usable by organiss. Glucose ay be oxidized copletely if sufficient
More informationEstimation of the Effect of Cadence on Gait Stability in Young and Elderly People using Approximate Entropy Technique
MEASUREMENT SCIENCE REVIEW, Volue 4, Section 2, 4 Estiation of the Effect of Cadence on Gait Stability in Young and Elderly People using Approxiate Entropy Technique M. Arif *, Y. Ohtaki **, R. Nagatoi
More informationBuletinul Ştiinţific al Universităţii "POLITEHNICA" din Timişoara Seria HIDROTEHNICA TRANSACTIONS on HYDROTECHNICS
Buletinul Ştiinţific al Universităţii "POLITEHNICA" din Tiişoara Seria HIDROTEHNICA TRANSACTIONS on HYDROTECHNICS To 55(69), Fascicola, 010 Experiental Stand for the Study of Unsteady Water Flow through
More informationExercise 3. Power Versus Wind Speed EXERCISE OBJECTIVE DISCUSSION OUTLINE. Air density DISCUSSION
Exercise 3 Power Versus Wind Speed EXERCISE OBJECTIVE When you have completed this exercise, you will know how to calculate the power contained in the wind, and how wind power varies with wind speed. You
More informationFish Farm Consent Modelling. Poll na Gille
Poll na Gille February 2014 Report Written by Environental Manager Marine Harvest Scotland Fars Office Blar Mhor Industrial Estate Fort Willia, PH33 7PT Tel: + 44(0)1397 70 1550 Fax: + 44(0)1397 70 1174
More informationSeaWheeze 2018 Training Guide
SeaWheeze 2018 Training Guide Ya, e re reerring to you. And also is running glossary. This glossary is your go-to or all ings training terinology. Reer back to is list to help you navigate e asks o e day.
More information3D simulation of ship motions to support the planning of rescue operations on damaged ships
Procedia Coputer Science Volue 51, 2015, Pages 2397 2405 ICCS 2015 International Conference On Coputational Science 3D siulation of ship otions to support the planning of rescue operations on daaged ships
More informationGuide to Target Archery Rounds, Scoring, Handicaps and Classifications
Guide to Target Archery Rounds, Scoring, Handicaps and Classifications 2016 Contents 1Target Archery Rounds...3 1.1Iperial Outdoor Rounds...4 1.2Metric Outdoor Rounds...5 1.3Indoor Rounds...6 1.4Shooting
More informationDS/EN DK NA:2015
National Annex to Eurocode 1: Actions on structures - Part 1-4: General actions - Wind actions Foreword This national annex (NA) is a reision of DS/EN 1991-1-4 DK NA:010-03 and addendu 1 of 010-03-30,
More informationGolf Instruction programs at Bobby Clampett s Impact Zone Golf Academy
Golf Instruction progrs at Bobby Clpett s Ipact Zone Golf Acadey Join PGA Tour winner and CBS Golf Broadcaster Bobby Clpett and his certified Ipact Zone Golf instructor te for instruction experiences that
More informationCARPET BOWLING m
Rules of the Gaes Carpet Bowling CARPET BOWLING 1. These rules, as published by R.W. Hensall & Sons Ltd. of Victoria, Australia, shall be considered the official rules for the Alberta 55 Plus Gaes and
More information100gk Abseil Position Drop Test Dates: 21 st & 22 nd May 2012 Venue: Gridins Training Centre, Lithuania
100gk Abseil Position Drop Test Dates: 21 st & 22 nd May 2012 Venue: Gridins Training Centre, Lithuania Testers: C Parkin - Auditor/Assessor, Arturas Vengalis - L3 Training Manager Gridins) V Toas Daugintis
More informationGuide to Target Archery Rounds, Scoring, Handicaps and Classifications
Guide to Target Archery Rounds, Scoring, Handicaps and Classifications Produced by Malcol North (Herts Group of Archery Coaches) Page 1 of 11 Contents 1Target Archery Rounds...3 1.1Iperial Outdoor Rounds...3
More informationStable bipedal walking with a swing-leg protraction strategy
To cite this article: Bhounsule, Pranav A., and Zaani, Ali. Stable bipedal walking with a swing-leg protraction strategy. Journal of Bioechanics 51 (017): 13-17. Stable bipedal walking with a swing-leg
More informationFOCUS: TRE TECHNICAL CENTRE 7-POST RIG & DAMPER TRE GMBH. TRE GmbH Post Rig
FOCUS: TRE TECHNICAL CENTRE 7-POST RIG & DAMPER DYNAMOMETER @ TRE GMBH SET-UP OF VERTICAL DYNAMICS (7-POST RIG) The Technology Centre Chassis Development in Neustadt offers you: Chassis development on
More informationExploring fisheries dynamics according to different quota governance mechanisms: application to the bay of Biscay common sole fishery
IIFET 2014 Conference, 7-11 July 2014, Brisbane, Australia Exploring fisheries dynaics according to different quota governance echaniss: application to the bay of Biscay coon sole fishery Manuel Bellanger,
More informationBrian P. Casaday and J. C. Vanderhoff Brigham Young University, Provo, Utah
P. SIMLATIOS OF ITERAL WAVES APPROACHIG A CRITICAL LEVEL Brian P. Casaday and J. C. Vanderhoff Brigha Young niversity, Provo, tah. BACKGROD Internal gravity waves exist abundantly in our world in stably-stratified
More informationOn Runway Capacity and Wake Vortex Safe Separation Distance (SSD)
On Runway Capacity and Wake Vortex Safe Separation Distance (SSD) L.M.B.C. Capos CCTAE (Center for Aeronautical and Space Science and Tecnology), Instituto Superior Tecnico, Lisbon Technnical University.
More informationExercise 1 Network Planning Design. Teresa Grilo Dep. of Engineering and Management Instituto Superior Técnico Lisbon, Portugal
Exercise 1 Network Planning Design Teresa Grilo Dep. of Engineering and Manageent Instituto Superior Técnico Lisbon, Portugal SCM/IST 1 SCM/IST IST Lisbon Ana Ana Carvalho 2015 2015 Introduction Find the
More informationDesign of Saddle Support for Horizontal Pressure Vessel Vinod Kumar, Navin Kumar, Surjit Angra, Prince Sharma
World Acadey of Science, Engineering and Technology Vol:8, No:, 0 Design of Saddle Support for Horizontal Pressure Vessel Vinod Kuar, Navin Kuar, Surjit Angra, Prince Shara International Science Index,
More informationEnergy balance of the model as described in Theory and Model
Energy balance of the model as described in Theory and Model 1. Introduction 2. Power sources and -sinks 3. Numerical results 4. Final remarks 5. Heavy shell (added) 1. Introduction The energy balance
More informationThe water outgassing rate of internal surfaces of vacuum systems
Journal of Physics: Conference Series PAPER OPEN ACCESS The water outgassing rate of internal surfaces of vacuu systes Recent citations - Soe probles of the vacuu technique developent L N Rozanov and A
More informationChapter 11 Motion. Displacement-. Always includes Shorter than distance
Chapter 11 Motion Section 1 - an object s change in position relative to a reference point. Observe objects in to other objects. international unit for. Frame of Reference Frame of reference- a system
More informationPHY 221: Wavefunction, Wave Superposition, Standing Waves on a String
PHY 221: Wavefunction, Wave Superposition, Standing Waves on a String Objective Write a mathematical function to describe the wave. Describe a transverse wave and a longitudinal wave. Describe frequency,
More informationA Hare-Lynx Simulation Model
1 A Hare- Simulation Model What happens to the numbers of hares and lynx when the core of the system is like this? Hares O Balance? S H_Births Hares H_Fertility Area KillsPerHead Fertility Births Figure
More informationA position graph will give the location of an object at a certain time.
Calculus 3.4 Notes A position graph will give the location of an object at a certain time. At t = 4, the car is 20 miles away from where it started. A position function is usually written as or. If the
More informationINSTRUMENT INSTRUMENTAL ERROR (of full scale) INSTRUMENTAL RESOLUTION. Tutorial simulation. Tutorial simulation
Lab 1 Standing Waves on a String Learning Goals: To distinguish between traveling and standing waves To recognize how the wavelength of a standing wave is measured To recognize the necessary conditions
More informationLimits of Wave Runup and Corresponding Beach- Profile Change from Large-Scale Laboratory Data
University of South Florida Scholar Coons Geology Faculty Publications Geology 1-21 Liits of Wave Runup and Corresponding Beach- Profile Change fro Large-Scale Laboratory Data Tiffany M. Roberts University
More informationAn Impeller Blade Analysis of Centrifugal Gas Compressor Using CFD
An Impeller Blade Analysis of Centrifugal Gas Compressor Using CFD Vivek V. Kulkarni Department of Mechanical Engineering KLS Gogte Institute of Technology, Belagavi, Karnataka Dr. Anil T.R. Department
More informationContaminant Distribution Around Persons in Rooms Ventilated by Displacement Ventilation Brohus, Henrik; Nielsen, Peter Vilhelm
Aalborg Universitet Containant Distribution Around Persons in Roos Ventilated by Displaceent Ventilation Brohus, Henrik; Nielsen, Peter Vilhel Publication date: 1994 Docuent Version Publisher's PDF, also
More informationWeight Optimization and Finite Element Analysis of Pressure Vessel Due to Thickness
2017 IJSRSET Volue 3 Issue 2 Print ISSN: 2395-1990 Online ISSN : 2394-4099 Theed Section: Engineering and Technology Weight Optiization and Finite Eleent Analysis of Pressure Vessel Due to Thickness Rashi
More informationTotal 0/30. 0/1 points Walker3 2.P.068. [544577]
9/9/13 Aignent Previewer Phy 111.HW#2b (3168643) Current Score: 0/30 Due: Wed Sep 11 2013 10:30 AM PDT Quetion Point 1 2 3 4 5 6 7 8 9 10 11 0/1 0/2 0/3 0/3 0/3 0/3 0/1 0/1 0/1 0/6 0/6 Total 0/30 Decription
More informationJurnal Teknologi A MODIFIED ARTIFICIAL POTENTIAL FIELD METHOD FOR RIVERINE OBSTACLES AVOIDANCE. Full Paper. Mei Jian Hong, M. R.
Jurnal Teknologi A MODIFIED ATIFICIAL POTENTIAL FIELD METHOD FO IVEINE OBSTACLES AVOIDANCE Mei Jian Hong, M.. Arshad* Underwater, Control and obotics esearch Group (UCG), School of Electrical and Electronic
More informationDesign of Pedal Driven Unit: An unconventional alternative Energy Source
Design of Pedal Driven Unit: An unconventional alternative Energy Source M. S. Giripunje 1, Dr. C. N. Sakhale, S. K. Undirwade 3, S. N. Waghaare 4 1 3 4 Abstract Increasing load shedding, insufficiency
More informationLab 1c Isentropic Blow-down Process and Discharge Coefficient
058:080 Experimental Engineering Lab 1c Isentropic Blow-down Process and Discharge Coefficient OBJECTIVES - To study the transient discharge of a rigid pressurized tank; To determine the discharge coefficients
More informationLinear Seakeeping High Sea State Applicability
Proceedings of the 16 th International Ship Stability Workshop, 5-7 June 2017, Belgrade, Serbia 1 Linear Seakeeping High Sea State Applicability Tiothy C. Sith, Naval Surface Warfare Center Carderock Division,
More informationCompare the scalar of speed and the vector of velocity.
Review Video QOD 2/14/12: Compare the scalar of speed and the vector of velocity. What are the equations for each? Feb 14 6:51 AM 1 Imagine that you are a race car driver. You push on the accelerator.
More informationChapter 6. Gait cycle parameters recognition using the. wearable motion detector
Authors:Che-Chang Yang (2011-01-21); recoended: Yeh-Liang Hsu (2011-02-21). Note: This article is the Chapter 6 of Che-Chang Yang s doctoral thesis Developent of a Hoe Telehealth Syste for Teleonitoring
More information501 Interchange Design Interchange Design Considerations... 10
5 Interchange Design Table of Contents 51 Interchange Design... 1 51.1 General...1 51.2 Interchange Type...1 51.2.1 Diaond Interchanges... 1 51.2.1.1 Tight Urban Diaond Interchange (TUDI)... 1 51.2.1.2
More informationWave phenomena in a ripple tank
Wave phenomena in a ripple tank LEP Related topics Generation of surface waves, propagation of surface waves, reflection of waves, refraction of waves, Doppler Effect. Principle Water waves are generated
More informationDraft BS EN Stationary source emissions - Determination of the water vapour in ducts - Standard reference method
Draft for Public Coent PRIATE CIRCULATION EH//1_14_0146 For coent - Action Due Date: 015/0/3 For 36 DPC: 14 / 3093551 DC BSI Group Headquarters 389 Chiswick High Road London W4 4AL Date: 8 October 014
More informationDOWNFORCE BALANCE. The Downforce Balance graph (shown at the left) illustrates which areas of the vehicle this product affects.
OVERVIEW Spanning 67 (or 61) inches over its optimized 3D airfoil shape, the APR Performance GTC-300 Adjustable Wing supplies maximum downforce in sports and touring car applications. DOWNFORCE BALANCE
More informationSEMI-SUBMERSIBLE YACHT CONCEPT RETHINKING BEHAVIOUR AT ANCHOR AND GENESIS OF THE COMFORT DRAFT
24th International HISWA Syposiu on Yacht Design and Yacht Construction 14 and 15 Noveber 2016, Asterda, The Netherlands, Asterda RAI Convention Centre SEMI-SUBMERSIBLE YACHT CONCEPT RETHINKING BEHAVIOUR
More informationAP Physics B Summer Homework (Show work)
#1 NAME: AP Physics B Summer Homework (Show work) #2 Fill in the radian conversion of each angle and the trigonometric value at each angle on the chart. Degree 0 o 30 o 45 o 60 o 90 o 180 o 270 o 360 o
More informationPackage compete. R topics documented: August 29, Title Analyzing Social Hierarchies Type Package Version 0.1
Title Analyzing Social Hierarchies Type Package Version 0.1 Package copete August 29, 2016 Author c(person(``jaes P.'', ``Curley'', role = c(``aut'', ``cre''), eail = ``jc3181@colubia.edu'') Maintainer
More informationShedding Light on Motion Episode 4: Graphing Motion
Shedding Light on Motion Episode 4: Graphing Motion In a 100-metre sprint, when do athletes reach their highest speed? When do they accelerate at the highest rate and at what point, if any, do they stop
More informationStanding Waves in a String
Standing Waves in a String OBJECTIVE To understand the circumstances necessary to produce a standing wave. To observe and define the quantities associated with a standing wave. To determine the wavelength
More informationUnderstanding the Factors Governing Motorsport Safety Fence Design Through DOE Techniques. In conjunction with the GRM. Andrew Mellor Joe Johnson
Understanding the Factors Governing Motorsport Safety Fence Design Through DOE Techniques In conjunction with the Andrew Mellor Joe Johnson Introduction In recent years huge advances have been made in
More informationVolume 2, Issue 5, May- 2015, Impact Factor: Structural Analysis of Formula One Racing Car
Structural Analysis of Formula One Racing Car Triya Nanalal Vadgama 1, Mr. Arpit Patel 2, Dr. Dipali Thakkar 3, Mr. Jignesh Vala 4 Department of Aeronautical Engineering, Sardar Vallabhbhai Patel Institute
More informationChapter 14-Gases. Dr. Walker
Chapter 14-Gases Dr. Walker State of Matter Gases are one of the four states of matter along with solids, liquids, and plasma Conversion to Gases From liquids Evaporation Example: Boiling water From solids
More informationAnalytical model of a rope and karabiner system
Analytical model of a rope and karabiner system By Philippe Bertreau and Chris Pipe 1. Introduction Various climbing accidents involving the failure of karabiners with their gate open have been reported.
More information2 Characteristics of Waves
CHAPTER 15 2 Characteristics of Waves SECTION Waves KEY IDEAS As you read this section, keep these questions in mind: What are some ways to measure and compare waves? How can you calculate the speed of
More informationMXV. Vertical Multi-Stage In-Line Pumps. Construction. Applications
MXV Construction Vertical ulti-stage pups with suction and delivery connections of the sae diaeter and arranged along the sae axis (in-line). Corrosion-resistant bearing sleeves lubricated by the puped
More informationDISCHARGE OF NON-REACTIVE FLUIDS FROM VESSELS1
Brazilian Journal of Cheical Engineering ISSN 0104-6632 Printed in Brazil www.scielo.br/bjce Vol. 34, No. 04, pp. 1149 1159, October Deceber, 2017 dx.doi.org/10.1590/0104-6632.20170344s20160158 DISCHARGE
More informationSection 1. Objectives:
Chapter 2 Motion Objectives: Section 1 Use a frame of reference to describe motion Differentiate between Speed and Velocity Calculate the speed of an object Use graphs to describe speed Observing Motion
More informationChapter 13 Fluids. Copyright 2009 Pearson Education, Inc.
Chapter 13 Fluids Phases of Matter Density and Specific Gravity Pressure in Fluids Atmospheric Pressure and Gauge Pressure Pascal s Principle Units of Chapter 13 Measurement of Pressure; Gauges and the
More informationUsing sensory feedback to improve locomotion performance of the salamander robot in different environments
Using sensory feedback to improve locomotion performance of the salamander robot in different environments João Lourenço Silvério Assistant: Jérémie Knüsel Structure of the presentation: I. Overview II.
More informationHelium Management of the ESS Target and Monolith Systems
Helium Management of the ESS Target and Monolith Systems P. Nilsson, R. Linander, A. Lundgren, C. Kharoua, P. Sabbagh, F. Plewinski, F. Mezei and E. Pitcher European Spallation Source ESS AB, SE-22100
More informationChapter 11 Motion. Section 1
Chapter 11 Motion Objectives: Section 1 Use a frame of reference to describe motion Differentiate between Speed and Velocity Calculate the speed of an object Use graphs to describe speed 1 Observing Motion
More informationA MODEL FOR ANALYSIS OF THE IMPACT BETWEEN A TENNIS RACKET AND A BALL
A MODEL FOR ANALYSIS OF THE IMPACT BETWEEN A TENNIS RACKET AND A BALL Hiroshi Maeda, Masaaki Okauchi and Yoshio Shimada Faculty of Engineering, Oita University, Oita City, Oita, Japan The purpose of this
More information(Lab Interface BLM) Acceleration
Purpose In this activity, you will study the concepts of acceleration and velocity. To carry out this investigation, you will use a motion sensor and a cart on a track (or a ball on a track, if a cart
More informationINTERACTION BETWEEN HYDRODYNAMICS AND SALT MARSH DYNAMICS: AN EXAMPLE FROM JIANGSU COAST
Proceedings of the Sixth International Conference on Asian and Pacific Coasts (APAC 211) Deceber 14 16, 211, Hong Kong, China INTERACTION BETWEEN HYDRODYNAMICS AND SALT MARSH DYNAMICS: AN EXAMPLE FROM
More informationHow An Airplane Wing Creates Lift
2004 Transportation Education Academy Activity: How An Airplane Wing Creates Lift Standards being met for technological literacy: 1. Number 8 2. Number 9 3. Number 11 4. Number 18 Description: In this
More informationRELATIONS BETWEEN CENTRIFUGAL BASKET DESIGNS AND MASSECUITE CHARACTERISTICS
Proceedings of The South African Sugar Technologists' Association - April 1967 79 RELATIONS BETWEEN CENTRIFUGAL BASKET DESIGNS AND MASSECUITE CHARACTERISTICS by Dr. HELMUT EICHHORN Salzgitter Maschinen
More informationThe OWEZ Meteorological Mast
The OWEZ Meteorological Mast Analysis of mast-top displacements P.J. Eecen E. Branlard ECN-E--08-067 OWEZ_R_121_mast_top_movement Acknowledgement/Preface The Off Shore wind Farm Egmond aan Zee has a subsidy
More informationCooperative and Non-Cooperative Game Control Strategies of the Ship in Collision Situation
http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volue 12 Nuber 1 March 2018 DOI: 10.12716/1001.12.01.09 Cooperative and Non-Cooperative Gae Control
More information2. OPERATION CHART: QW-1471
W 2. ORTIO HRT: QW-1471 GRL GUI topwatch Mode ress to change fro ode to ode. Hold down for one or two seconds in any ode to switch back to the Tiekeeping Mode. In addition to the odes illustrated below,
More informationFactors determining the decrease in surface wind speed following the evening transition
Q. J. R. Meteorol. Soc. (2003), 129, pp. 1945 1968 doi: 10.1256/qj.02.163 Factors deterining the decrease in surface wind speed following the evening transition By A. LAPWORTH Met Of ce, Cardington, UK
More informationDrift Characteristics of a Moored Conductivity Temperature Depth Sensor and Correction of Salinity Data
282 J O U R N A L O F A T M O S P H E R I C A N D O C E A N I C T E C H N O L O G Y VOLUME 22 Drift Characteristics of a Moored Conductivity Teperature Depth Sensor and Correction of Salinity Data KENTARO
More informationModal Analysis of Barrels for Assault Rifles
PROBLEMS OF MECHATRONICS ARMAMENT, AVIATION, SAFETY ENGINEERING ISSN 2081-5891 2 (8), 2012, 7-16 Modal Analysis of Barrels for Assault Rifles Peter LISÝ, Mário ŠTIAVNICKÝ Academy of the Armed Forces of
More informationVessel Interaction A Case Study Peter O Brien, Dr Terry O Brien, Chris Hens OMC International Pty Ltd, Melbourne, Australia
Vessel Interaction A Case Study eter O Brien, Dr Terry O Brien, Chris Hens OMC International ty Ltd, Melbourne, Australia Abstract The growth in vessel sizes is lacing orts under increasing ressure to
More information