Meshless Numerical Simulation of Crack Growth Induced by Stress-Assited Corrosion in a Brittle Solid

摘要

The evolution of a crack-like defect that propagates by stress drivenrncorrosion in an isotropic, linear elastic solid is simulated by applyingrnMeshless Local Petrov-Galerkin (MLPG) method, where the simplestrnMLPG5 method has been adopted. Comparing with former simulationrnresults (presented in ISOPE 2007 and 2008) , we have found that, whenrnhandling crack related numerical simulation, MLPG method is muchrnmore convenient than conventional finite element method. Dependingrnon material properties, loading, and temperature, we observe threernpossible behaviors for the flaw: gross blunting, stable, and unstablernsharpening of the crack tip, respectively.