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# shape factor of rubber pad

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## shape factor of rubber pad

### RE: shape factor of rubber pad

I would contact the Tun Abdul Razak Research Centre (www.tarrc.co.uk) and ask the rubber engineers there because they developed the mathematics for this.

### RE: shape factor of rubber pad

Josh

I have attached a little sketch from 'Engineering Design With Natural Rubber' which explains the calculation of shape factor.
From your post it seems that you are dealing with a multi-layer (interleaved) spring.
These are essentially a set of springs in series, so the shape factor is calculated from a single layer. Assuming all the layers are identical, and the calculated stiffness of one layer is K, the the total stiffness is K/N, where N is the number of layers.

Does this help?

Tom

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