This works is focused on the development of a multibody model of the mg07. These systems were the cars rear suspension, component. From the factory, the mustang suspension has to compromise for the sake of the passengers comfort. Upper lateral link, lower parallel links, twin trailing link rear a variation of the reversed lower aarm style. For windows 7, 8 and 10 with opengl see the faq for more details faq for more. 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. Steering system and suspension design for 2005 formula. The team has thirteen returning members that are responsible for designing and manufacturing each of the five vehiclesubsystems. The car is evaluated in automotive design and performance through a series of static and dynamic events which focus on safety, manufacturability and of. Design and optimization of the steering system of a. After analysis and optimization of the geometry the entire system is designed in solidworks. As far as easy to use and understand gui and simulation time is considered i would recommend you to use optimum k and suspensionsim for your kinematic and compliances of suspension system.
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. Jan 11, 2017 rather than marrying ourselves to a specific suspension frequency at this point, well simply use it as our fudge factor once we get to the point that were calculating spring rate. After getting used to the design cycle of our universitys formula sae car, i find myself wanting some quasiaccurate cad of my cobra. Optimum suspension geometry for a formula sae car pdxscholar. Optimization of double wishbone suspension system with.
First of all u have to decide which suspension system u are going to have on your formula car. Siemens helps prepare students for the workforce by partnering. Redesign of an fsae race cars steering and suspension. The old model remains at the back of the drawing, you can use it as a guide when making adjustments to the layout or visually compare how the changes will perform when the suspension is in motion. Dec 10, 2016 first of all u have to decide which suspension system u are going to have on your formula car. A basic description of each dynamic parameter is included in appendix a. Adamscar for student competition teams and university use msc provides bundles of software, including full adams and nastran suites, to competition teams at no cost. The classis 60s sports and racing car rear suspension. The purpose of this paper is to present experimental data on designing and optimizing a carbon fiber suspension. Its for this reason that we offer the ttx25 mkii fsae. It will be used to define the optimal setup of the car for a specific track, verifying the results with a data acquisition system on the real vehicle. The suspension geometry of a standard fsae race car has been used for the calculation of the forces.
The best software for students in formula sae and formula student. These forces have been calculated for all the links of a double wishbone suspension geometry. Redesign of an fsae race cars steering and suspension system. Susprog3d is the premier kinematic suspension design and analysis tool. This will allow testing of the two different design approaches for a more. This paper is an introduction to formula sae fsae suspension and frame design based on the experience of the design team at um. The vehicle presented in this project is the fsaeprototype of the university of padua, which competed in the 20 season of the series. Unofficial discussion forum for formula sae and formula student engineering competitions, part of the sae international collegiate design series. 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. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Keywordssuspension molding, double wishbone, variable.
The front and rear suspension systems of the vehicle were developed using. Values specific to the 2006 mracing fsae vehicle have been excluded from this report to protect the competitive interests of the team. There may be significant differences in dynamic tuning parameters for different fsae packages. The suspension system must therefore keep the largest contact tire patch at all times. If youre part of a new team, i suggest putting a lot of emphasis on this. How to design suspension mounting points for formula sae car. 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. The target values for concerning and braking have been set according to the tracks present in the fsae international events. Hyperco suspension components are a part of winning, from street to track. How to choose spring rates for your car speed academy. Car design tools for chassis, suspension, aerodynamics. Employing research and designs from previous years cars, the suspension will be designed using the iterative design process.
The following report from reid olsen, eric melchiori and andrew bookholt of composite suspension solutions shows how that comparison was conducted and its results. How can i learn designing suspension mounting points. Optimization of suspension characteristic of a pushrod actuated suspension system of an fsae car 74 form the programming, the sampling points coordinates for the surface is collected as shown in fig 3. Cite this article anshul dhakar and rishav ranjan, force calculation in. Each subsystem requires its members to implement organizational, managerial, and most importantly. Really, front roll center adjustments at the track are easy if performed with a little thought and reasonability. Also, for professors, msc products are available at discounted prices for classroom and research use. Raising the rf aarm inner pivot lowers the front roll. Lowering the rf aarm inner pivot raises the front roll center and moves it to the right.
Reducing weight while maintaining structural integrity is one of the key challenges formula sae teams face as they try and design the suspension of the formula car. How to design suspension mounting points for formula sae. Introduction he steering system of a formula sae car is of the utmost importance as it has to have a good reaction to all turns and corners at the event. 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. The unequal aarms with tierod on front and rear suspension are detailed. Analysis of wishbones, upright, fsae, tiredata, etc. It started with optimization of the track and wheelbase based on previous autox courses at michigan. When the stock suspension is engineered, it has only a few primary duties to handle the weight of the vehicle, provide great ride quality, and handle normal driving road conditions.
Siemens software skillshops for formula sae students. Suspension geometry part 1 camber, toe, caster, kpi, scrub. General motors engineering, chassis, suspension, and program engineering. Jan 29, 2018 suspension geometry part 1 camber, toe, caster, kpi, scrub radius sk8215. Constant value unit signification m 300 kg overall vehicle mass wf wr 45 55 % % mass distribution related to front rear axis f f m w m 5 kg overall mass on front axis r r m w m 165 kg overall mass on rear axis muf 27. Design of suspension system for formula student race car. Professionally drawn, fullydimensioned engineering drawings that show every aspect of mustang ii street rod front suspension construction. Steering system and suspension design for 2005 formula saea. Introduction the suspension system is one of the most important systems to consider when designing a fsae car. The front roll center is a point in space that is derived from the lf and rf instant centers and their relationship to the contact patch. A quick video of the mtsu fsae suspension setup that i designed. University of southern queenslands 2008 formula sae society of automotive. A slotted aarm plate allows you to use slugs to make front roll center adjustments at the track giving you another weapon in your adjustment arsenal. Design and optimization of a formula sae racecar chassis and suspension.
To help with this process, multiple programs and methods will be used. 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. 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. Adams car software allows students to design and simulate their fsae. To verify that, i compered my results with the results obtained using lotus suspension analysis software. Hypercoils have been utilized by every indianapolis 500 winner since 1965. May 07, 2017 as known, pull rod helps in reducing the cg, which is not a negligible one but pull rod system poses a lot of packaging difficulties. It is also required that this new rear suspension design be interchangeable with the solid rear axle design.
Wolfpack motorsports is nc states formula sae team. Few teams also go with spring damper on lower wishbone system. For the simulation results, part of the suspension of the hard points position have been optimized by adamsinsight module, to improve the. Mustang ii front suspension build your own, fraction the cost.
Design of a carbon fiber suspension system for fsae. Mostly rear pull rod can interfere with your drive shafts. Formula sae interchangeable independent rear suspension design. The load paths and fbd have been drawn and axial stress in the all the linkages. Nov 21, 2011 a quick video of the mtsu fsae suspension setup that i designed. Which suspension setup is the best for an fsae or student. How to find or calculate suspension points in fsae chassis. Suspension geometry part 1 camber, toe, caster, kpi.
Introduction to formula sae suspension and frame design. Design and optimization of fsae race car suspension system. Optimize various parameters such as suspension stiffness or location of center of mass. Which software should one use to design suspensions for. In the meantime, vehicle subsystems like steering, suspension, drive train, and electronics are packaged and optimized on the computer. After rules analysis, which limits the suspension a minimum travel and wheelbase, project targets were defined, than a benchmarking was made on top teams. The university of birmingham formula student team ubracing competes in the. Hate having to get out and get under to find in this or that fits, what the next thing will mount to, etc.
Tire data has been used to find out the friction coefficient at the contact patch which varies to the normal. Simulation and optimization of fsae racing suspension. From creating an accurate model of the car and every nut and bolt in it in 3d, to the design and simulation of critical aspects such as the chassis and suspension, software programs have become commonplace to amateur car design. Design of formula sae suspension theory in practice. The 2002 lawrence technological universities formula sae car will be used as an example throughout this paper.
Fsae os team will redesign the outboard suspension for my12. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on the above. Design and optimization of formula sae suspension system. No matter the engine work, no matter the aero work, in fsae suspension handling is king. A thorough analysis of 2004 usq racer car has been included in order to. 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. Rather than marrying ourselves to a specific suspension frequency at this point, well simply use it as our fudge factor once we get to the point that were calculating spring rate. Ruzicka university of technology brno, faculty of mechanical engineering, institute of machine and industrial design, brno, czech republic. The suspension system is one of the most important systems to consider when designing a fsae car. As known, pull rod helps in reducing the cg, which is not a negligible one but pull rod system poses a lot of packaging difficulties. Problem statement suspension components on any racecar must maintain a balance between weight, stiffness, strength, cost and manufacturability.
A picture of the 2017 viking motorsports internal combustion. Technical note on design of suspension parameters for fsae vehicle o. For windows 7, 8 and 10 with opengl see the faq for more details faq for more details. For the amateur car designer, there are many tools available today that make designing a car easier.
You can also use this function to compare front and rear suspension although be careful as only the model at the front of the drawing is saved within. Technical note on design of suspension parameters for fsae. Mostly fsae teams have double wishbone pushrodpullrod suspension system. Which suspension setup is the best for an fsae or student car. The purpose of this paper is to present experimental data on designing and optimizing a carbon fiber suspension system for formula cars. Suchomel culs prague, technical faculty, department of vehicles and ground transport, prague, czech republic b. 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. Design of a carbon fiber suspension system for fsae applications. The anyalysis in this paper will be heavily re liant on. Introduction to formula sae suspension and frame design edmund f. Help best software for suspension geometry for mac. Post here to have your teams flair added to the lis. Index terms steering, fsae, ackermann, lotus shark, solidworks i. Adams is the most widely used multibody dynamics and motion analysis software in the world.
The plans with work with stock or dropped spindles, as well as stock or aftermarket control arms. Through baseline testing and component evaluations, systems of the car were identified as areas that reduced performance and prohibited predictable vehicle dynamics. 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. Formula sae interchangeable independent rear suspension. Design and optimization of a formula sae racecar chassis. Suspension geometry part 1 camber, toe, caster, kpi, scrub radius sk8215. These parameters are intended to describe a racing package similar to dartmouth formula racings 2006 fsae car.
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