— Class: <ELASTICITY-PROBLEM>

An elasticity problem is a special instance of an elliptic sytems.

Superclasses: <ELLSYS-PROBLEM>

— Function: CHECK-ELASTICITY-TENSOR TENSOR DIM &OPTIONAL (THRESHOLD 1.e-6)

Checks the symmetries in the elasticity tensor.

— Function: ISOTROPIC-ELASTICITY-TENSOR &KEY DIM LAMBDA MU

Returns the tensor corresponding to the Lam'e constants lambda and mu, i.e.:

A_ij^kl = lambda delta_ik delta_jl + mu (delta_ij delta_kl + delta_kj delta_il).