CARMA Colloquium
3:00 pm
Thursday, 29th Jul 2010
V129, Mathematics Building
• Download Hu-Washizu Formulation ("The University of Newcastle") [1]
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.