Push Rod Suspension Geometry Question Camber Change Wheels

AI Thread Summary
The discussion focuses on modeling the behavior of a double wishbone suspension system in response to wheel displacement. The user seeks to understand how an anti-clockwise change in angle of the horizontal member affects the positions of points D, G, and H within the suspension geometry. It is noted that the angles provided are inaccurate and that the suspension design will result in increased camber during bump due to unequal length A-arms. Participants suggest consulting resources on race car suspension for further insights. The conversation emphasizes the complexity of suspension geometry and its impact on vehicle dynamics.
Gianluca Bush
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Hey,

I've spent ages trying to solve what seems to be a pretty simple geometrical problem and I was wondering if anyone could help me solve it/give me some tips. I am trying to model how the suspension of a car behaves as a result of a displacement of the wheels.

What the attachment shows is a double wishbone suspension connected to a fixed chassis - similar to these sorts of mechanics: http://rezachu.blog.com/files/2012/12/KugelPushrod.jpghttp://poisson.me.dal.ca/~dp_10_14/oldarchitecture/images/bc.bmp

The suspension arms rotate about the fixed pivots on the chassis (at points A and E) and the push rod goes on the compress a spring/damper.

So my question is: for an anti clockwise change in angle (delta) in the horizontal member, AC, how will this deflection affect the position of D, G and H - all in terms of the given geometry and angle, delta.

Apologies if I have not phrased my question clearly.
Any advice would be appreciated.
 

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  • PushRodCarImages.jpg
    PushRodCarImages.jpg
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FYI, the 31.28 & 41.28 angles are inaccurate.
 
you will build camber in Bump..it will be more camber as you have two non equal length A-arms...suggest you read Race Car Suspension class in Automotive forum
 
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