The suspension system is one of the most important systems to consider when designing a fsae car. How to find or calculate suspension points in fsae chassis. Aarms, bell crank, pushrod, ansys, spring and dampers 1. Formula u chassis and suspension university of utah. The final tyre selection was a compromise of several factors due to the unique nature of the formula sae vehicle. This will allow testing of the two different design approaches for a more. There may be significant differences in dynamic tuning parameters for different fsae packages. Through baseline testing and component evaluations, systems of the car were identified as areas that reduced performance and prohibited predictable vehicle dynamics. Redesign of an fsae race cars steering and suspension. If you need trash bags we have them available just ask at the announcer. This will allow testing of the two different design approaches for a. These parameters are intended to describe a racing package similar to dartmouth formula racings 2006 fsae car. To design and build 2 sets of dampers 8 in total for a fsae racecar, that will perform better than any available offtheshelf piece, and run them at the fsae competition in may 2006.
Fsae os team will redesign the outboard suspension for my12. This page should be the starting point for anyone interested in using adamscar for fsae. Redesign of an fsae race cars steering and suspension system. For the simulation results, part of the suspension of the hard points position have been optimized by adamsinsight. Design and optimization of an fsae frame, suspension, and business portfolio submitted to the faculty of. Its basic dimensions are set by the suspension geometry, the engine, other mounting points and the fsae rules about safety etc. In past years, the team has implemented two different types of steering systems, both with little success.
How to design suspension mounting points for formula sae. Nov 21, 2011 a quick video of the mtsu fsae suspension setup that i designed. Looking for downloadable 3d printing models, designs, and cad files. Few teams also go with spring damper on lower wishbone system. Msc simcompanion using the special fsae database with. The formula sae rules are the responsibility of the formula sae rules committee and are issued under the authority of the sae international collegiate design series. Finally, the analysis of static stress on the main components of fsae racing using the simulation module was performed to form the car suspension system so that it meets the design requirements of the fsae regulations. The following report from reid olsen, eric melchiori and andrew bookholt of composite suspension solutions shows how that comparison was conducted and its results. Elka suspension dampers actuated by rockers are used at each corner.
Designing and constructing a chassis and suspension system for a formula sae racecar is a highly complex task involving the interaction of hundreds of parts that all perform an essential function. It is also required that this new rear suspension design be interchangeable with the solid rear axle design. These systems were the cars rear suspension, component. Keep your paddocks cleanwe are responsible for keeping the parts of the lincoln airpark used for fsae clean. Short, sweet, and touches on everything you need to know. I am designing a differential for my universitys fsae vehicle and have some doubts. Jul 14, 2016 cinematics of the fsae front suspension design. Optimization of double wishbone suspension system with. The unequal aarms with tierod on front and rear suspension are detailed. The vehicle presented in this project is the fsaeprototype of the university of padua, which competed in the 20 season of the series. After rules analysis, which limits the suspension a minimum travel and wheelbase, project targets were defined, than a benchmarking was made on top teams.
Editor s comments through this periodic neletter, we hope to keep all the people who make this project possible informed about the exciting ideas and developments that make our team what it is today. First thing is that i got the cad modeling of the torsen model that is sold to fsae teams and i have verified that the large gears attached to the semiaxles are helical gears about 48 mm diameter with 15 teeth. The purpose of this mqp was to design and manufacture a new frame and suspension for use in the 2018 fsae competition. Having the suspension fundamentals nailed allows for better chassis design actual understanding of torsional rigidity and in general an overall better vehicle as your trade offs. Design and optimization of an fsae frame, suspension, and. The team has thirteen returning members that are responsible for designing and manufacturing each of the five vehiclesubsystems. Introduction to formula sae suspension and frame design edmund f. Thirdly, the front and rear suspension models were set up by the solidworks 3d software.
The suspension system is a device connecting the body with wheels. At the end of the year the team was unable to complete the fabrication of the 2009 fsae racecar. Design and optimization of a formula sae racecar chassis and. The reason carbon fiber suspensions are favored over the current steel suspensions is because of they can reduce the weight of the suspension by 50%. Mac pherson front suspension in this case, normally, positive camber angle is very low and. Our suspension geometry was a huge project with design spanning the better part of august to february or more add some summer sessions, late tweaking well into march april. The suspension system must therefore keep the largest contact tire patch at all times. Pdf in this work, we presented in detail the design procedure of the front double aarm push rod suspension system for a formula student race car.
This paper proposes a procedure which involves kinematic and dynamic analysis followed by vibration analysis for the design of a double aarm pushrod suspension system. Design of formula sae suspension theory in practice. The free body diagram of the corner assembly and all the linkages are made. The car right after the silverstone event in 20 fsae is a students engineering competition where student teams from around the world design, build, test, and race a smallscale formula style racing car. Analysis of torsional stiffness of the frame of a formula student. No matter the engine work, no matter the aero work, in fsae suspension handling is king. The suspension geometry of a standard fsae race car has been used for the calculation of the forces. Trash cans are provided in the paddocks and throughout the fsae site. In order to reduce unsprung weight, we chose to use modular carbon fiber. Introduction to formula sae suspension and frame design. How can i learn designing suspension mounting points. Mostly fsae teams have double wishbone pushrodpullrod suspension system. Design and optimization of formula sae suspension system.
Pdf tire model with temperature effects for formula sae vehicle. Dec 10, 2016 first of all u have to decide which suspension system u are going to have on your formula car. How to design suspension mounting points for formula sae car. University formula sae racecar, the subject vehicle, was selected because it already included some accommodations for. Designing of formula student race car chassis based on fsae.
Values specific to the 2006 mracing fsae vehicle have been excluded from this report to protect the competitive interests of the team. Design the suspension, drivetrain, safety systems, driver positions etc. The testing method consists of attaching the frame with suspension to two beams. June 2023 in lincoln, ne chip every year psus viking motorsports team builds a open wheel race car, with a limit of a 600 cc engine to compete against other engineering schools in the international fsae competition.
Rcvd is a little too much, and is considered advanced materials although very, very good for suspension and handling. Each subsystem requires its members to implement organizational, managerial, and most importantly. Salinas university of missouri rolla abstract this paper is an introduction to formula sae fsae suspension and frame design based on the experience of the design team at umrolla. An fsae racecar does not need to absorb massive impacts from jumping off cliffs, nor does it produce massive amounts of downforce, requiring very stiff springs and dampers. Design and optimization of a formula sae racecar chassis. The thesis will serve as a summary of the knowledge that i have accumulated over four years of personally designing and overseeing the manufacturing of the mit motorsports suspension, provide insight into the design of the my2009 vehicle. If youre part of a new team, i suggest putting a lot of emphasis on this. Writers past experience in the automotive industry using acar. Umrolla designed the 1996 suspension geometryaround a wheel profile from a previous car and then acquireda set of threepiece rims to meet the design.
Jul 29, 2016 force calculation in upright of a fsae race car. Pdf new approaches in designing a race car chassis for an. At the front, pullrod suspension is used for packaging reasons, as the suspension is under the pilots legs, and to lower the center of gravity. It contains instructions for getting adams, as well links and descriptions of many adams fsae resources, including the fsae database. How much thought goes into your suspension geometry. A quick video of the mtsu fsae suspension setup that i designed. Design of suspension system for formula student race car. Please keep your paddock clean and make sure it is completely clean before your team. Pdf this paper presents the design and verification procedure of a race car. Design of a carbon fiber suspension system for fsae.
All accelerations, either lateral or longitudinal, must be put to the ground through the tires, which are held in contact with the ground by the suspension system. A basic description of each dynamic parameter is included in appendix a. Pdf formula society of automotive engineers sae fsae is a student. Design of a suspension system for a formula student. Through analysis of the car entered in the 2016 competition. Wolfpack motorsports is nc states formula sae team. This article deals with design of formula sae suspension by considering various loads and their simulation on each component of the system. The purpose of this paper is to present experimental data on designing and optimizing a carbon fiber suspension system for formula cars. This issue will mainly deal with our performance at the may 2005 fsae competition in detroit, the car that we competed with, and what our. June 2023 in lincoln, ne chip every year psus viking motorsports team builds a open wheel race car, with a limit of a 600 cc engine to compete against other engineering schools in. Hypercoils have been utilized by every indianapolis 500 winner since 1965. Hyperco suspension components are a part of winning, from street to track. Problem statement suspension components on any racecar must maintain a balance between weight, stiffness, strength, cost and manufacturability.
First of all u have to decide which suspension system u are going to have on your formula car. Tire data has been used to find out the friction coefficient at the contact patch which varies to the normal. The principal loads on the chassis are from the suspension system and. Fsae steering system 2 abstract executive summary the uc davis formula sae team has designed a car to compete in the 2006 formula sae west competition on june 14th. The 2002 lawrence technological universities formula sae car will be used as an example throughout this paper. It started with optimization of the track and wheelbase based on previous autox courses at michigan.
Fsae suspension suspension vehicle deformation mechanics. Forces are generated at the tire contact patch during various maneuvers of the car and transferred to the chassis through the suspension links. In this paper, kinematics analysis software adamscar was used to establish the fsae car racing double wishbone independent front suspension simulation model, kinematics simulation analysis has been used to get the wheel beats of each parameters variation. The target values for concerning and braking have been set according to the tracks present in the fsae international events. Viswanathan, kaleem sherif department of automobile, saveetha school of engineering, chennai, tamilnadu, india abstract this paper discusses the effect of suspension kinetics on handling and steering. So in the turn, camber of that wheel is inside turn is zero or negative useful and outside turn is negative useful. Formula sae interchangeable independent rear suspension. The suspension geometry was imported from the cad model. Simulation and optimization of fsae racing suspension. Nov 17, 2007 design the suspension, drivetrain, safety systems, driver positions etc. Fsae suspension free download as powerpoint presentation. Introduction the suspension system is one of the most important systems to consider when designing a fsae car.
Design of a carbon fiber suspension system for fsae applications. At the rear, pushrods are used for packaging reasons. Double wishbone front suspension in such suspension, camber is positive and about 1 degree. As a result a close to ultimate set up could be achieved for the front suspension given cost, rule and time constraints. Fsae chassis design, need direction physics forums. In 2009, the wpi fsae team designed and began manufacturing a racecar for the 2009 formula sae competition.
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