Hello forum. I’m fairly new to FSAE and suspension design. One of the overwhelming problems that I’m having is figure out the step by step. Abstract. Design analysis of suspension especially for racecar suspension is very crucial to achieve maximum performance and handling. Suspension design. This article deals with design of Formula SAE Suspension by considering various loads and their simulation on each component of the system.
|Published (Last):||26 June 2017|
|PDF File Size:||3.18 Mb|
|ePub File Size:||13.61 Mb|
|Price:||Free* [*Free Regsitration Required]|
You can’t wait to perfect your knowledge and analysis–you’d never design anything! Contact Us Archive Top.
Ddesign the pneumatic tires very well With this you can use your tire model to obtain forces on the car, these forces will make you able to calculate load transfers, then re-calculate the tire forces, and iterate till you converge.
Milliken Research Associates, Inc.
Suspension Design Step by Step Process
You’ll have to loose something in order to win the other. One of the overwhelming problems that I’m having is figure out the step by usspension process in designing the suspension system. Or find the yaw moment when both external tires are at peak for different radius.
Some function and associated specifications can be derived from the RuleBook 3.
There was a problem providing the content you requested
Is there something that can be innovative to the design? Benn, Sorry, My previous post was all about kinematics If you could give me a list from start to finish 1,2,3,etc in terms of calculations and parameters to address, desiign would be great.
About your topic it had been discussed quite alot, But I’m going to share what I got anyway. The suspension permits control of the vehicle direction. One of the best softwares out there is OptimumK however it is not for free. First; I want to tell you a tiny little thing You might not need combined loads at the beginning, but it could be useful for looking at trail-braking and power corner exit and differential selection You might want to use the Stackpole Engineering Pacejka model from TTC Round 3, it might not be your tire, but it will give you a good indication of the common behavior of a fsae tire.
Hello Benn, First warm greetings and afterward; I’m a beginner too so don’t take this as an expert talk What are the specifications associated with your functional requirements. It’s skipped forward to the final 5. Remember that the tires are the only contact you have between the sprung mass and the ground.
You will have to make basic assumptions to estimate the values. I have written down one approach, there is no “best” one, but this is systematic, and “relatively” simple since it seems to be your first go at it: The more times you go around the cycle the more you learn, the better your analysis gets and the more engineering you have in your design.
Results 1 to 10 of Then; Put the whole geometry on a kinematics analysis software Only then will desibn have to worry with roll centers, roll stiffness, kinematics, motion ratio, dampers and such things. Don’t stop studying; Once you start design; Study more not desgn What are the functional requirements, for the suspension sub-system, these should emerge from the functional requirement of the car. They have Formula SAE cars and course already modeled into the software.
Then go back to your model and edit it again and analyze once more and start iteration. Suspension Design Step by Step Process. Then, build, race, win. One thing that can be noticed is actually how bumpy the track is. I’d start by analyzing and understanding a few existing suspensions. After which; Fae should be able to transform the whole 2D drawing into 3D you have 2 planes and the third one is the top plane.
All the fitting is already done and all the equations of the model written down -Write a simple code for the Four Wheel model that is able to calculate the slip angle for a given radius and steering angle, you will have to make assumptions about the slip angle at the rear.
Read and understand about the bicycle model, the understand the behaviour of the model and the tire. There is a knowledge-analysis-design- evaluate cycle This will also have to integrate with the kind of car you want to build overall tradeoffs aren’t the same with a 4cylinder than with a single, aero or non aero. Thirldy; If you want to start your design process, Then start by visualizing a 3D model of any type of suspension you want Another free one and quite successful is Wishbone.
These specifications should be written in a table for fast reference. All times are GMT Secondly; There is a “Find” button at the utility bar up at the right just beside the “New” button, So try to search for your topic if it had been discused before so as to save time and effort.
I hope I haven’t said something stupid, if so I duly apologize. If you want to reduce fabrication cost for the year, you may want to stick to the tires and wheels you already have. Understand the basic physics first! You can’t truly design something if you can’t perform an analysis on it.
Introduce yourself properly; namecountry, team Who is using what, what has been used before? Thanks for the information!
After this iteration, how can these ideas you’ve formed achieve your high level goals? Be patient enough; The whole process might take up to a month of hard working.
Is there a reason why many have converged on a certain concept? Work well on the compromises How skspension up the helix can you get in your FSAE tenure?