**process eigen2

Description

This process is used to compute the eigenvalues of a symmetric second order tensor. No coefficients are needed. The process provides three values for each point. The eigenvalues are given in decreasing order, starting by the larger one. Their name in the problem.utp file is built from the name of the tensor by adding respectively p1, p2 and p3.

Syntax

**process eigen2 \(~\,\) *var name

Example

% this will provide sigp1, sigp2, sigp3
% with sigp1 >= sigp2 >= sigp3
**process eigen2
  *var sig