Sep 25, 2016 getting started with lotus suspension analysis introducing lotus suspension analysis 2 1. First of all you need to define your broad parameters based on the requirement of your vehicle, once you are done with your performance parameters for the suspension camber, toesteer, ro. An active suspension system will collect dynamic vehicle data and, with this collected. Looking for downloadable 3d printing models, designs, and cad files. Manufacturing is done by major machining processes like laser cut, grinding, welding, lathe operations, etc.
Types of analysis front impact analysis rear impact analysis side impact analysis front torsional stiffness rear torsional stiffness b. The suspension geometry is made by following the steps from books of various authors and then simulated in an suspension analysis software. This paper is for design and analysis of suspension systems related with student formula one vehicle. For example, vehicle track width and wheelbase are factors governing the success of the cars handling characteristics. Chassis t uning adriano schommer, paulo soliman, lucas travi farias, mario martins federal university of santa maria. Suspension optimization design and virtual prototype simulation. The above geometry designed is in accordance with ackerman geometry. Getting started with lotus suspension analysis introducing lotus suspension analysis 2 1. Simscales fea and cfd software offers the perfect soultion for formula sae. Designing and analysing a suspension system for a vehicle. Design, analysis of atype front lower suspension arm in. In 2009, the wpi fsae team designed and began manufacturing a racecar for the 2009 formula sae competition. Structural simulations optimize the suspension of an fsae car. For the amateur car designer, there are many tools available today that make designing a car easier.
Initially the model had 2 actuators that raised and lowered the wheels with a static frame. Through analysis of the car entered in the 2016 competition, research, feedback from the previous designers, and critiques from the competition judges, optimized designs were developed. Design of formula sae suspension theory in practice. Teams spend 812 months designing, building, and preparing their vehicles for a competition. Dynamic simulation and analysis of fsae racer for development of. One effective strategy for tuning a formula sae racecar is the continuous function approach. The present study utilises the catia v5 software to design the suspension.
The actual software programs include ansys fluent and starccm for cfd, solidworks for cad and stress analysis, optimum k for geometry, and ricardo wave for engine performance. Lotus shark suspension analysis software is used for dynamic analysis of suspension. This paper presents the procedure of design and analysis both kinematic and dynamic of the front double aarm pushrod suspension system for a formula student race car. Jun, 2017 applications of cfd in formula student and formula sae session 2 complete car aerodynamics duration. Therefore, fsae suspension design should focus on the constraints of the competition. Simulation and optimization of fsae racing suspension. 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. Which software should one use to design suspensions for the.
Intuitive userfriendly layout that is split into three sections. The load paths and fbd have been drawn and axial stress in the all the linkages. The best software for students in formula sae and formula student. Sep 20, 2019 each fsae team dedicates special efforts in optimizing a chassis to understand its strength and area for weight reduction. Lotus engineering software has been developed by automotive engineers, using them on many powertrain and vehicle projects at lotus over the past 20 years. Fsae suspension development in virtual environment 2018360231 through adamscar software, it was developed a complete template of a double wishbone suspension with a single shock absorber per axle for a formula sae prototype. One system that has captured interests lately is the vehicles suspension, as it. The philosophy underpinning lotus engineering software is to offer simulation tools which enable the user to generate models very quickly. A procedure for establishing suspension parameters, which includes computation and example that has damper, spring, and antiroll bar5. Fsae baja engineering teams can exercise their vehicle designs under various road conditions, performing the same tests they normally run in a test lab or on a test track, but in a fraction of time. Gsteps for performing analysis there is a number of software which is available to perform analysis on the object such as hyper mesh, ansys, solid works, etc. Steering suspension animation in adams dynamic analysis software duration. Suspension design determine loads to properly design the suspension components the.
Car design tools for chassis, suspension, aerodynamics. Each fsae team dedicates special efforts in optimizing a chassis to understand its strength and area for weight reduction. Design analysis of formula student race car suspension system. The 3d models of the main parts are made with autodesk fusion 360 software to be assembled. During the design phase of the 2002 fsae vehicle safety, durability, and maintainability were placed as top priorities. Optimumkinematics developed by optimumg engineers is a suspension and design analysis software. Design and virtual prototype simulation analysis of fsae racing car. The suspension analyzer does a complete 3d suspension analysis, including bump steer, ackerman, caster gain, anti dive, tire scrub, camber gain and much more. Fsae engineering teams can exercise their vehicle designs under various road conditions. Computer simulation is a key part of the automotive development process.
Diyguru presents a certification program on lotus suspension analysis. 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. In this paper, kinematics analysis software adamscar was used to establish the fsae car racing double wishbone independent front suspension simulation. Formula sae challenges students to conceive, design, fabricate, and compete with small formulastyle racing cars. To determine the drag and downforce incident on the formula 1 car for a track with turns and for a straight track.
The displacement from the front axle on the upright design is found again in solid works software. Design and optimization of an fsae frame, suspension, 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. Thirdly, the front and rear suspension models were set up by the solidworks 3d software. Optimum kinematics will be used for creating the bulk of the suspension design. Design analysis of formula student race car suspension. Secondly, the ansys stress analysis software was used to analyze. The purpose of this mqp was to design and manufacture a new frame and suspension for use in the 2018 fsae competition. Since the results were the same and my model was correct, i decided to use this model. Nov 28, 2017 the actual software programs include ansys fluent and starccm for cfd, solidworks for cad and stress analysis, optimum k for geometry, and ricardo wave for engine performance. To perform a cfd analysis of the aerodynamics of flow around a fsae car. For the simulation results, part of the suspension of the hard points position have been optimized by adamsinsight.
With adams car, fsae teams can quickly build and test their functional virtual prototypes of complete vehicles and vehicle subsystems. Adams car software allows students to design and simulate their fsae vehicles to maximize their vehicle performance. An active suspension system will collect dynamic vehicle data and, with this collected data, alert the driver of unsafe conditions and adjust the vehicles suspension parameters to maximize vehicle stability and maintain traction. With use many computer aided design programs, and finite element analysis software the max stress and deflection of each part was determined at various load conditions.
Cite this article anshul dhakar and rishav ranjan, force calculation in. Through a decade of race engineering, dartmouth formula racing has found that. This software is specifically designed with a userfriendly interface that makes the process of computer aided suspension design and analysis much faster and more convenient. Hardware analysis of common programs used by an fsae team.
Keeping the above rules in consideration, the suspension analysis to find the perfect rack length is done on solid works software. These cars are judged in a series of static and dynamic events. The first part of the analysis aims to benchmark stiffness and damping of the various spring and damper configurations, starting from the equivalent stiffness given by the kinematics of the suspension, which is a double aarm with pull rod actuator, then the response of the suspension at different. Design analysis of suspension especially for racecar suspension is very crucial to achieve maximum performance and handling. A parallel wheel suspension analysis test is performed on the front. Analysis was done in lotus shank suspensi on analysis software, from the analysis the designs are said to be suitable for the end application. The topic of this project is the kinematic analysis of an independent suspension, taking into consideration the suspension system of the formula sae electric car of the university of padua raceup team. This shows the fitness of the model designed under actual working conditions. For example, inboard suspension could be a more marketable design, while outboard suspension might cost less and be easier to manufacture. Fsae suspension design should focus on the constraints of the competition. Pdf design and analysis of suspension component of f1. These forces have been calculated for all the links of a double wishbone suspension geometry. Paper open access design and optimization of fsae chassis. 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.
If you are involved with vehicle engineering work at your school, especially for student competitions such as formula sae, baja, solar car, and. Formula sae is an international automotive design competition organized by sae. Dynamic simulation and analysis of fsae racer for development. Complete graphs and reports are included, and several new. Aim is to make sure that chassis have enough strength to withstand all possible impact loads. Apr 03, 2015 this video describes how to do suspension dynamics analysis in adamscar. Fsae engineering teams can exercise their vehicle designs under various road conditions, performing the same tests they. Mar 03, 2016 designing and analysing a suspension system for a vehicle. Optimize various parameters such as suspension stiffness or location of. Fea analysis or software calculations gives maximum stress at contact point with wheel hub is about 280 mpa, and actual experimental tests gives maximum stress value of 254 mpa. In the meantime, vehicle subsystems like steering, suspension, drive train, and. If you are involved with vehicle engineering work at your school, especially for student competitions such as formula sae, baja, solar car, and hybrid or autonomous. Design of suspension system for formula student race car.
General terms in suspension system and wheel assembly. Fea is often used in analyzing spaceframe tubular chassis or monocoque chassis for things like torsional rigidity, crash energy absorption and vibrationfatigue. Analysis of wishbones, upright, fsae, tiredata, etc. Analysis of different designs for the fsae chassis based on all the design aspects including all rules and safety aspects of the car will be carried out. Analysis of formula student race car ijert journal. Which software should one use to design suspensions for. This work will be focusing on the spaceframe chassis. Design and optimization of formula sae suspension system. Introduction to formula sae suspension and frame design. This is an official page of formula sae, a program of sae international. After rules analysis, which limits the suspension a minimum travel and wheelbase, project targets were defined, than a benchmarking was made on top teams. Getting started with lotus suspension analysis 1 introducing lotus suspension analysis 3 1. Pdf design and analysis of suspension component of f1 prototype.
Suspension is an important part of vehicle design whose function is to absorb the shock. This paper presents a framework for testing and tuning a formula sae racecar. This program provides you with the most flexible learning environment. With the help of the software lotus suspension analysis, front and rear suspension kinematics w ere adjusted to compensate for camber gain due to roll, wheel travel bumprebound and compliance. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles. The suspension needs to be as light as possible, but it also needs to survive all the loads it. 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. Structural design software or fea fem finite element analysis method enables you to simulate loads on a structure to determine how much deflection or load the structure will handle. 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. Redesign of an fsae race cars steering and suspension system. General terms in suspension system and wheel assembly camber angle.
This video describes how to do suspension dynamics analysis in adamscar. At the end of the year the team was unable to complete the fabrication of the 2009 fsae racecar. Fastway formula student formula sae rear wing cfd analysis. Suspension analysis for formula student vehicles youtube. Cfd analysis of flow over a fsae car projects skilllync. The use of the software served as a valuable tool in the selection of the proper metal alloy, and the geometry of each part. Applications of cfd in formula student and formula sae session 2 complete car aerodynamics duration. How cfd and structural simulations can optimize an fsae car. 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. Simulation and optimization of fsae racing suspension scientific. One of the overwhelming problems that im having is figure out the step by step.
By creating a simulated model of an older car and correlating it to collected. Lotus suspension analysis shark a market leading application for suspension modelling and design from the worldleaders in vehicle ride and handling. Fsae suspension, but the components must also be reasonably priced for the cost analysis and marketable for the sales presentation. Lsa is a design and analysis tool that can be used for both the initial layout of a vehicle suspensions hard points, and also the design and orientation of suspension bushes for the tuning of the complaint behaviour. Finally, zfr used structural simulation to optimize the strengthtoweight ratio of the zfr06s suspension.
To verify that, i compered my results with the results obtained using lotus suspension analysis software. With the help of the software lotus suspension analysis, front and rear suspension kinematics w ere adjusted to compensate for camber gain due to. Later on the assembly of all parts and mono spring rocker arm front suspension system were designed. Dynamic simulation and analysis of fsae racer for development of stability control system. So, we have created a set of video tutorials help them get started with suspension design using various ansys products. Time is a limited resource for an fsae team so having good hardware to run your simulations will result in faster iterations leading to better designs. Gsteps for performing analysis there is a number of software which is available to perform analysis on the.
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