FSAE SUSPENSION DESIGN PDF

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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One of the best softwares out there is OptimumK however it is not for free.

Do you want to just keep the wheels on the car and complete the laps or do you want a car that is the fastest thing in a corner? The suspension must permit vertical movement between the suspended mass relative to the tires.

Don’t stop studying; Once you start design; Study more not desugn

Use the Bicycle model first for practice, then build to a Four Wheel 2D model. How far up the helix can you get in your FSAE tenure? Page 1 of 2 1 2 Last Jump to page: It should be very helpful faae. Understand the basic physics first!

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I’m fairly new to FSAE and suspension design. 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.

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Study the pneumatic tires very well 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: Hi Benn, Another thing I’d look into is setting some goals for your suspension by identifying what parameters will really affect your laptime.

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.

What are the specifications associated with your functional requirements. Hello Benn, First warm greetings fse afterward; I’m a beginner too so don’t take this as an expert talk You won’t be able to be sure about the results unless you have tire data! Then go back to your model and edit suspejsion again and analyze once more and start iteration.

I really like one quote or an OptimumG motto that says “Knowledge shared; Is knowledge squared”.

It’s skipped forward to the final 5. Read and understand about the bicycle model, the understand the behaviour of the model and the tire. Start by 2D visualizing. One thing that can be noticed is actually how bumpy the track is.

As in any design problem there are some step you should take before jumping into the details. First; I want to tell you a tiny little thing They desiggn Formula SAE cars and course already modeled into the software.

If you have aero you have to calculate the load from it, in any case you will have drag, wich will require torque suspenslon the rear wheel and will create a small load transfer! Sorry for any typing mistakes.

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Suspension Design Step by Step Process

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. Another free one and quite successful is Wishbone. Or find the yaw moment when both external tires are at peak for different radius.

With this tool you will be able to make graphics, table or whatever you like by example, by iteration you can find the maximum lateral G that gives a zero yaw moment for different radius.

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Milliken Research Associates, Inc. Vehicles without suspension have won, and they can be fast, as long as the desjgn adjustments are left open for balance. Work well on the compromises God be with you and Good luck with desogn design.

Some function and associated specifications can be derived from the RuleBook 3. There is a knowledge-analysis-design- evaluate cycle 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.

Prior art, read on suspension design in RCVD for example. Not for a particular reason except that there is quite a lot of tutorials on youtube ” Start by suspesion two planes; Front view and a side view. Benn, Sorry, My previous post was all about kinematics You’ll have to loose something in order to win the other.