<fcu### [at] yahoocom> wrote:

>That's right. The threads are very inelastic. But the equations describing
>that must be very complicated. You can simplify your model if you ignore the
>"tightening" of the threads and compensate with a bit of more elasticity to
>the cloth.

You can impose a penalty on elasticity if strain goes above a certain
value. Not cap it altogether but penalize it strongly so that the
cloth tends to preserve its original shape without being too elastic.

I would use a strongly non-linear stress-strain relationship if I were
you. Try logarithmic for a start, or exp(-x*t). This way for higher
stresses there'll be almost no increase in strain.

And then you may consider material failure :)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
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