CARMA Colloquium

3:00 pm

Thursday, 29th Jul 2010

V129, Mathematics Building


Dr Bishnu Lamichhane

(CARMA, The University of Newcastle)

Hu-Washizu Formulation

The Hu-Washizu formulation in elasticity is the mother of many different finite element methods in engineering computation. We present some modified Hu-Washizu formulations and their performance in removing locking effect in the nearly incompressible elasticity. The stabilisation of the standard Hu-Washizu formulation is used to obtain the stabilised nodal strain formulation or node-based uniform strain elements. However, we show that standard or stabilised nodal strain formulation should be modified to have a uniformly convergent finite element approximation in the nearly incompressible case.