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.
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There is a knowledge-analysis-design- evaluate cycle Hello Benn, First warm greetings and afterward; I’m a beginner too so don’t take this as an expert talk Prior art, read on suspension design in RCVD for example. About your topic it had been discussed quite alot, But I’m going to share what I got anyway.
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. Read and understand about the bicycle model, the understand the behaviour of the model and the tire.
Then start analyzing the results from the softwares such as the camber change due to body roll, bump, droop 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: Start by 2D visualizing. Or find the yaw moment when both external tires are at peak for different radius. Only then will you have to worry with roll centers, roll stiffness, kinematics, motion ratio, dampers and such things.
If you could give me a list from start to finish 1,2,3,etc in terms of calculations and parameters to address, that would be great. All times are GMT If you have aero you have to calculate the load from it, in any case you will have drag, wich will require torque from the rear fsxe and desin create a small load transfer!
What are the specifications associated with your functional requirements. Introduce yourself properly; namecountry, team Why were certain concepts used and others abandoned? This will also have to integrate with the kind desig car you want to build overall tradeoffs aren’t the same with a 4cylinder than with a single, aero or non aero. Thanks for the information!
Suspension Design Step by Step Process
It’s skipped forward to the final 5. Now slim the ideas down to a core goal.
I’d start by analyzing and understanding a few existing suspensions. So to choose a tire you need a car, and to make a car you need to choose a tire. You can’t truly design something if you can’t perform an analysis on it. Vehicles without suspension have won, and they can be fast, as long as the proper adjustments are left open for balance.
If tires change, what becomes different. OptimumLap would be a good place to start as it will give you a decent idea of what really affects laptime on one of these cars.
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Is there a reason why many have converged on a certain concept? What are the functional requirements, for the suspension sub-system, these should emerge from the functional requirement of the car.
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.
I hope I haven’t said something stupid, if so I duly apologize. I basically don’t know where to start there is so much information.
Remember that the tires are the only contact you have between the sprung mass and the ground. What do you want to achieve? Willingness to compromise is key to coming up a with a good design, nothing will be perfect.
These specifications should be written in a table for fast reference.