Fsae suspension free download as powerpoint presentation. 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 engine was paired with a custom pneumatic shift transmission to allow an automatic shift mode. Formula sae interchangeable independent rear suspension. Introduction to formula sae suspension and frame design edmund f. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. These cars are judged in a series of static and dynamic events. The 2002 lawrence technological universities formula sae car will be used as an example throughout this paper. Fsae lincoln will likely see 80 international student teams while fsae michigan accepts 120, all vying for that first place trophy.
Teams spend 812 months designing, building, and preparing their vehicles for a competition. This steering system had to also comply with all aspects section 3. Below is a breakdown of what each website is for and the information that is required on each. Nov 21, 2011 a quick video of the mtsu fsae suspension setup that i designed. The suspension system is one of the most important systems to consider when designing a fsae car. Camber is the angle the wheel leans in the front view, and affects cornering dynamics by adding a trust vector inward our outward of the turn. Design of a carbon fiber suspension system for fsae applications.
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. Formula sae interchangeable independent rear suspension design. Measuring the traction limits and suspension forces of. Design of a suspension system for a formula student. Fsae 2015 chassis and suspension final report fiu department. Formula sae and formula student are collegiate engineering competitions with over 500 participating schools that challenge teams of students press j to jump to the feed. Index terms steering, fsae, ackermann, lotus shark, solidworks i. Fsae spec files current news rcv performance products specializes in industry leading quality parts for countless motorsports applications from ultra4 race cars, desert cars, pro4 trucks, to jeeps, toyotas, utvs, and rock bouncers. Msc simcompanion using the special fsae database with md.
Also shown on this diagram are the angles of the front wheels required to. 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. Design of a formula student race car springdamper system. According to the rules of fsae rule book 20172018, rule t6. Jan 12, 2019 fsae suspension design pdf hello forum. Change the units to inches, pounds mass, and pounds force by going to settingsunits. Optimization of double wishbone suspension system with. The final tyre selection was a compromise of several factors due to the unique nature of the formula sae vehicle. 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. After rules analysis, which limits the suspension a minimum travel and wheelbase, project targets were defined, than a benchmarking was made on top teams. 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.
There has been a slight confusion on using the sae. One effective strategy for tuning a formula sae racecar is the continuous function approach. Press question mark to learn the rest of the keyboard shortcuts. So in the turn, camber of that wheel is inside turn is zero or negative useful and outside turn is negative useful. 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%. The car currently features a solid rear axle, and the task of converting it to incorporate an interchangeable rear suspension has been undertaken in order to. Before the modeling can begin, the ball joint locations, inner control arm pivot points, and track width must be known. 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. Pdf design of the wufr19 fsae suspension semantic scholar. The load paths and fbd have been drawn and axial stress in the all the linkages. It is evident from these images that the vehicle systems all integrate into the chassis purposefully.
The unequal aarms with tierod on front and rear suspension are detailed. These systems were the cars rear suspension, component. Values specific to the 2006 mracing fsae vehicle have been excluded from this report to protect the competitive interests of the team. Freebody diagram of the tire forces green and suspension member forces orange. This enables the drivers to have good control of the car. Redesign of an fsae race cars steering and suspension system. As a result a close to ultimate set up could be achieved for the front suspension given cost, rule and time constraints. The goal for this project was to design a steering system for the 2006 fsae car to address all the shortcomings of previous designs, yet retain the low cost, manufacturability, and low weight.
Also required for assembly is the thrust washers and bearings, which can mostly be purchased as catalog items see the m021dhu general fact pdf file and the 012000 general fact pdf file, as well as journal pins, and drop pins. Redesign of an fsae race car s steering and suspension system. Cooling the wiring harness for the 201011 car will be taken on by william jay kistler as an honors. Design and optimization of the steering system of a. The unequal aarm suspension was chosen by the suspension team as the design concept to be pursued during phase two. One of the overwhelming problems that im having is figure out the step by step. Introduction the suspension system is one of the most important systems to consider when designing a fsae car. Mac pherson front suspension in this case, normally, positive camber angle is very low and. Based on the assumption that all of the cars dynamic properties act as continuous functions of many parameters, the goal is to tune the car to operate at both extremes of the desired performance. Once a decision has been made about these basic parameters, the suspension must be modeled to obtain the desired effects. Figure 1 2001 uwam chassis converted to electric power using a conventional inboard engine. A flow chart of the feedback loop that guides the suspension point design iteration used to meet the performance requirements of the suspension system.
The cars are judged, by industry specialists, on a number of criteria in different typologies of events, both statics and dynamics. Not only was a great deal of fea testing done, but a test stand was developed to apply a constant cyclical load to verify fatigue would not be a problem over the life of an fsae car. The suspension system must therefore keep the largest contact tire patch at all times. The default units for the fsae model are millimeter, kilogram, and newtons. The pins can be manufactured elsewhere and cost outlined as per the sae competition rules. These forces have been calculated for all the links of a double wishbone suspension geometry. The rear frame that holds the powertrain, drivetrain and suspension will be shortened to reduce total mass and yaw inertia of the car. Please let us know if you have any questions and we will be clear up any problemsconcerns. Cite this article anshul dhakar and rishav ranjan, force calculation in. Suspension, steering and drivetrain components are designed to be easily replaceable on the track with only basic tools. A thorough analysis of 2004 usq racer car has been included in order to. Fsae rules state that cclips may not be used as positive locking mechanisms in the bump suspension system 1. Chapter 3 documents the findings of the 2008 vehicle analysis.
The main subject of this report is the design of a springdamper system for the ure06. After analysis and optimization of the geometry the entire system is designed in solidworks. 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. Design of the wufr19 fsae suspension semantic scholar. This is an official page of formula sae, a program of sae international. Redesign of an fsae race cars steering and suspension. For tires to have optimum grip even in any position, we focused on minimizing camber change in negative direction with bound and rebound4. At the end of the year the team was unable to complete the fabrication of the 2009 fsae racecar. Our groups work on the powertrain for the 201011 fsae car was divided into 3 major project aspects, with some additional breakdowns under them. Open the fsae front suspension assembly by clicking file openassembly. Double wishbone front suspension in such suspension, camber is positive and about 1 degree.
Using the special fsae database with adams car msc software. In 2009, the wpi fsae team designed and began manufacturing a racecar for the 2009 formula sae competition. A basic description of each dynamic parameter is included in appendix a. Steering system and suspension design for 2005 formula.
The purpose of this paper is to present experimental data on designing and optimizing a carbon fiber suspension system for formula cars. Through baseline testing and component evaluations, systems of the car were identified as areas that reduced performance and prohibited predictable vehicle dynamics. First, the working principle of a suspension system is explained and a list. 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.
Bajafsae templates half car models user guide introduction multibody dynamics is a powerful tool that can be used in the development of the vehicle systems like the suspensions, steering systems and the brake systems. Suspension and steering design are driven by several key factors, such as camber, kingpin inclination, castor, scrub radius, and wheel offset, and mechanical trail. B if you have experience with adamscar, you may be able to follow these more concise steps. 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 washer between the nut and the bearing is therefore enlarged to act as a positive locking mechanism.
Design braking, steering and suspension systems for a formula sae competition that will provide effective vehicle control. Pdf on oct 25, 2016, lucas iensen bortoluzzi and others published formula sae chassis design to improve suspension tuning find, read and cite all the research you need on researchgate. Suspension for suspension design, we used double wishbone system that has low camber change for front and rear side. The car is evaluated in automotive design and performance through a series of static and dynamic events which focus on safety, manufacturability and of. In this report, the overall design process for a formula sae. The car must be equipped with a fully operational suspension system with shock absorbers. Adamscar and the baja and formula sae templates allow students to rapidly create a full dynamic model of their student competition vehicle and. Design and optimization of a formula sae vehicle a major qualifying project submitted to the faculty of. How to design suspension mounting points for formula sae car. There may be significant differences in dynamic tuning parameters for different fsae packages.
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. Fsae is a students engineering competition where student teams from around the world design, build, test, and race a smallscale formula style racing car. 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. Design of a carbon fiber suspension system for fsae. Analysis of wishbones, upright, fsae, tiredata, etc. Pdf formula sae chassis design to improve suspension tuning. Icmiee18171 design and numerical analysis of suspension. This article deals with design of formula sae suspension by. Measuring the traction limits and suspension forces of a formula sae. Msc simcompanion using the special fsae database with adams car. Solidworks 2018 was used for the physical modeling of the suspension in a file su93001ba 16. University of alberta f ormula sae on boarding package 20112012. These parameters are intended to describe a racing package similar to dartmouth formula racings 2006 fsae car. Once files have been uploaded to our system, change the order of your pdf documents.
Steering system design for an fsae car illinois institute of technology 9 2016 endurance event 300 fuel economy event 100 total 1,000 table 1. The optimization of a formula sae vehicles suspension. The suspension solutions design team has completely designed built and tested an independent rear suspension system for the 2008 fsae car. Pdf on oct 25, 2016, lucas iensen bortoluzzi and others published formula sae chassis design to improve suspension tuning find, read and cite all the. Using the design and completed parts from the 2009 fsae racecar, the mqp group from this year completed the fsae racecar. The formula sae series competitions challenge teams of university undergraduate and graduate students to conceive. The images following fig 5 and fig 6 illustrate the front end suspension packaging. Dec 29, 2011 adamscar and the baja and formula sae templates allow students to rapidly create a full dynamic model of their student competition vehicle and simulate complex dynamic events. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Design of suspension system for formula student race car. It started with optimization of the track and wheelbase based on previous autox courses at michigan. Pdf merge combine pdf files free tool to merge pdf online. Formula sae challenges students to conceive, design, fabricate, and compete with small formulastyle racing cars.
Once you merge pdfs, you can send them directly to your email or download the file to our computer and view. Fsae as defined by sae see link 7 in appendix a the formula sae competition is held annually in two locations within north america. The suspension dynamics and stiffness can be tuned through. The follow images show the manufactured chassis with the suspension, steering wheel, pedal box, engine, fuel tank, and differential all mocked up. The price you see is the price per each titanium stud. Formula u chassis and suspension university of utah. Part list for an fsae suspension and steering system. The chassis no longer meets the requirements for the fsae competition as the rules for the competition have changed since 2002. The aarm configuration meets the design requirements for structural integrity and suspension travel, and benchmarking specific to fsae indicated that the unequal aarm design was by far the most common design in fsae application. Competition points rules the design of the whole fsae car is regulated by the fsae rules that exists to maximize the safety of the vehicle not only for the driver but for the pedestrians as well. Scribd is the worlds largest social reading and publishing site. How much thought goes into your suspension geometry.
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