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zizorey8 Posted - 11/22/2014 : 03:20:59
This is our team's first participation at ASME HPVC , I had an inquiry about the development of the RPS FEA Model, the rules mentions that the applied forces (2670 N top & 1330 N Side ) should be reacted at the roll bar attachment point to the frame, I watched a video for one of the judges telling that we can make any other good assumptions, my question is, ((Are we free to assume any other constraints such as rigid (fixed) rear and front suspension points?))
Thanks in advance
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Mayank Posted - 06/29/2016 : 01:20:31
You are free to use any sort of constraints. But it would be better if you use fixed geometry at the joint(weld) between the chassis and rps, as this would give you the most drastic results, ensuring your rps can easily take the load without failure during real time testing.
The method you are proposing is also going to work but you would have to keep your factor of safety around 1.5 to account for elastic behaviour of vehicle frame. This may lead to redundant design.

P.S.- Pls try to validate your results using numerical calculations or by running simulation on different platforms, ensuring your final results.

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