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The suspension system of a FSAE (Formula Society of Automotive Engineers) vehicle is a vital system with many functions that include providing vertical compliance so the wheels can follow the uneven road, maintaining the wheels in the proper steer and camber attitudes to the road surface and reacting to the control forces produced by the tires (acceleration, braking and cornering). The members that comprise the suspension are subjected to a variety of dynamic loading conditions – it is imperative that they are designed properly to ensure the safety and performance of the vehicle. The goal of this research is to develop a model for predicting the reaction forces in the suspension members based on the expected load scenarios the vehicle will undergo. This model is compared to the current FSAE vehicle system and the design process is explained. The limitations of this model are explored and future methodologies and improvement techniques are discussed.
The purpose of this book is to cover essential aspects of vehicle suspension systems and provide an easy approach for their analysis and design. It is intended specifically for undergraduate students and anyone with an interest in design and analysis of suspension systems. In order to simplify the understanding of more difficult concepts, the book uses a step-by-step approach along with pictures, graphs and examples. The book begins with the introduction of the role of suspensions in cars and a description of their main components. The types of suspensions are discussed and their differences reviewed. The mechanisms or geometries of different suspension systems are introduced and the tools for their analysis are discussed. In addition, vehicle vibration is reviewed in detail and models are developed to study vehicle ride comfort.
This thesis details an analytical approach to an innovative suspension system design for implementation to the Formula SAE collegiate competition. It focuses specifically on design relating to geometry, mathematical modeling, energy element relationships, and computer analysis and simulation to visualize system behavior. The bond graph approach is utilized for a quarter car model to facilitate understanding of the analytical process, then applied to a comparative analysis between two transverse half car models. The second half car model contains an additional transverse linkage with a third damper, and is compared against the baseline of the first half car model without the additional linkage. The transverse third damper is an innovative design said to improve straight-line tire contact during single-sided disturbance, help mitigate the adverse effects of squat and dive, while not inhibiting the function of the anti-roll bar in cornering capability. Additional work is done investigating an optimization of suspension geometry through mathematical modeling in MATLAB of a four-bar linkage system. This code helps visualize the complex motion of the upright and calculates the wheel camber rate and variation to compare against tire data analysis to match maximum tire performance characteristics with camber angle.
This set includes Race Car Vehicle Dynamics, and Race Car Vehicle Dynamics - Problems, Answers and Experiments. Written for the engineer as well as the race car enthusiast, Race Car Vehicle Dynamics includes much information that is not available in any other vehicle dynamics text. Truly comprehensive in its coverage of the fundamental concepts of vehicle dynamics and their application in a racing environment, this book has become the definitive reference on this topic. Although the primary focus is on the race car, the engineering fundamentals detailed are also applicable to passenger car design and engineering. Authors Bill and Doug Milliken have developed many of the original vehicle dynamics theories and principles covered in this book, including the Moment Method, "g-g" Diagram, pair analysis, lap time simulation, and tyre data normalization. The book also includes contributions from other experts in the field. Chapters cover: *The Problem Imposed by Racing *Tire Behavior *Aerodynamic Fundamentals *Vehicle Axis Systems and more. Written for the engineer as well as the race car enthusiast and students, the companion workbook to the original classic book, Race Car Vehicle Dynamics, includes: *Detailed worked solutions to all of the problems *Problems for every chapter in Race Car Vehicle Dynamics, including many new problems *The Race Car Vehicle Dynamics Program Suite (for Windows) with accompanying exercises *Experiments to try with your own vehicle *Educational appendix with additional references and course outlines *Over 90 figures and graphs This workbook is widely used as a college textbook and has been an SAE International best seller since it's introduction in 1995.
Racecar data acquisition used to be limited to well-funded teams in high-profile championships. Today, the cost of electronics has decreased dramatically, making them available to everyone. But the cost of any data acquisition system is a waste of money if the recorded data is not interpreted correctly. This book, updated from the best-selling 2008 edition, contains techniques for analyzing data recorded by any vehicle's data acquisition system. It details how to measure the performance of the vehicle and driver, what can be learned from it, and how this information can be used to advantage next time the vehicle hits the track. Such information is invaluable to racing engineers and managers, race teams, and racing data analysts in all motorsports. Whether measuring the performance of a Formula One racecar or that of a road-legal street car on the local drag strip, the dynamics of vehicles and their drivers remain the same. Identical analysis techniques apply. Some race series have restricted data logging to decrease the team’s running budgets. In these cases it is extremely important that a maximum of information is extracted and interpreted from the hardware at hand. A team that uses data more efficiently will have an edge over the competition. However, the ever-decreasing cost of electronics makes advanced sensors and logging capabilities more accessible for everybody. With this comes the risk of information overload. Techniques are needed to help draw the right conclusions quickly from very large data sets. In addition to updates throughout, this new edition contains three new chapters: one on techniques for analyzing tire performance, one that provides an introduction to metric-driven analysis, a technique that is used throughout the book, and another that explains what kind of information the data contains about the track.
Through appendices and diagrams, Car Suspension and Handling, 4th Edition outlines the purpose and history of vehicle suspension systems, while defining the basic parameters of suspension geometry. In addition, the book delves into human sensitivity to vibration, and offers data on durability, tire background information, steering calculations and suspension calculations.
This book: Forces and Moments - 1. Today, the most important in race cars, is the corner behavior. To have a car with a very big velocity, is easy, but the same car in corner, normally not will be the fastest. That is: the main goal is analyzing together the vibrations of suspension, the tires and the aerodynamic. Three tools very importants to improve the grip and so, the velocity and behavior in corner. All this knowledge, available chapter by chapter and book by book. The best book you can find anywhere in the world. All the specialized information. The best specialists have written this fantastic-amazing book with ALL INFORMATION - DOC for you. Ideal for SAE Formula teams, Engineers, Race Teams, Vehicle designers, Students, etc.... Books - Chapters: - PRESENTATION, INTRODUCTION, AIR AND HIS CONTEXT - PRINCIPLES, PROPERTIES AND CONSEQUENCES OR EFFORTS - FORCES AND MOMENTS - WINGS - GROUND AND DIFFUSER - REFRIGERATION - PRESSURE CENTER - AERO MAP - FLANGES, NOZZLES, SUCTION INTAKES, AIR BOX, TRUMPETS AND EXHAUSTS - WIND TUNNELS - CFD - EXAMPLES OF RACING IMPLANTED SYSTEMS: F1, ETC... - NOMENCLATURE - CONSIDERATIONS ABOUT GOOD SETUP - IDEAL DESIGN - SETUP - POST RIG ANALYSIS - AERO POST RIG ANALYSIS: CFD, WIND TUNNEL AND TRACK TEST - CONCLUSIONS Others Books: - ANALYSIS AERO POST RIG IN HALF CAR MODEL - ANALYSIS CFD PIKES PEAK CAR - ANALYSIS CFD REAR WING: IMPROVING DESIGN - AERO POST RIG ANALYSIS SAMPLES - Etc.... And much more.... (study examples, reals cases, etc....)....
This Book: Post Rig Analysis. Today, the most important in race cars, is the corner behavior. To have a car with a very big velocity, is easy, but the same car in corner, normally not will be the fastest. That is: the main goal is analyzing together the vibrations of suspension, the tires and the aerodynamic. Three tools very importants to improve the grip and so, the velocity and behavior in corner. All this knowledge, available chapter by chapter and book by book. The best book you can find anywhere in the world. All the specialized information. The best specialists have written this fantastic-amazing book with ALL INFORMATION - DOC for you. Ideal for SAE Formula teams, Engineers, Race Teams, Vehicle designers, Students, etc.... Books - Chapters: - PRESENTATION, INTRODUCTION, AIR AND HIS CONTEXT - PRINCIPLES, PROPERTIES AND CONSEQUENCES OR EFFORTS - FORCES AND MOMENTS - WINGS - GROUND AND DIFFUSER - REFRIGERATION - PRESSURE CENTER - AERO MAP - FLANGES, NOZZLES, SUCTION INTAKES, AIR BOX, TRUMPETS AND EXHAUSTS - WIND TUNNELS - CFD - EXAMPLES OF RACING IMPLANTED SYSTEMS: F1, ETC... - NOMENCLATURE - CONSIDERATIONS ABOUT GOOD SETUP - IDEAL DESIGN - SETUP - POST RIG ANALYSIS - AERO POST RIG ANALYSIS: CFD, WIND TUNNEL AND TRACK TEST - CONCLUSIONS Others Books: - ANALYSIS AERO POST RIG IN HALF CAR MODEL - ANALYSIS CFD PIKES PEAK CAR - ANALYSIS CFD REAR WING: IMPROVING DESIGN - AERO POST RIG ANALYSIS SAMPLES - Etc.... And much more.... (study examples, reals cases, etc....)....