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Old 05-06-2013, 03:33 PM   #87
u/Josh
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Quote:
Originally Posted by Hancha Group View Post
Wait. First, let's all get on the same reference frame. Are we all thinking X is the longitudinal direction of the car, Y is the lateral direction of the car, and Z the vertical?

Also, where are we going to place the origin? Center of the wheels on the ground plane?
I just went with the notation of y being vertical (in the direction of bump travel) like Earl used to derive the transfer function. Then I guess X can be longitudinal and Z is lateral. The origin should probably be in the center of the car so for example the coordinates for the front passenger mass would be (I am guessing at the numbers here):

(50",y,30")

I know the X and Z coordinates would actually be a function of Y but for small angles I think this is negligible?
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