Consider the Hu-Washizu functional

in which

with

F = Bu + MDBu + M - ^{T}M - u^{T}N^{T}f dV |
(22.10) |

We wish to eliminate the statically admissible stress field from the functional, therefore the operator

Taking the variation of the functional with respect to

in which

(22.13) |

Since the degrees of freedom

First ed.

Copyright (c) 2012 by TNO DIANA BV.