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See attachment for ES 240 lecture notes on viscoelasticity.

This problem set is due Friday, Dec.7, 2007.

 Hi all

Given the radial displacement in the form of a linear elasticity equation's solution, how do I calculate the stress tensor considering the solid is hookian?

i'm try to do this model by abaqus and i faced some problems.any help is appreciated.

it is a 3 layers plates,a viscoelastic material sandwich between 2 steels.any kind of help,e.i,papers,thesis or notes etc are

welcome.

i modeled the 2 steel as sheel 'S8R"and the rubber as contiuum  "c3d20r",rubber is not thin.

I have noticed that a lot of people are using UMAT and VUMAT material model
subroutines for their researches. However, most of these subroutines do not
find their way to free code market and remain in the hands of the developers.
Therefore, a lot of wheel re-inventing has to be done by other people. Since
development and testing of a material subroutine takes a damn long time, I
think it is a good idea if each of us can share the subroutines she has
developed with the others. I know that a couple of subroutines are publicly

hi

I m facing the problem of severe diconinuity in contact

problem

any body knows how to solve this

thanks and regards

basavaraj