BEM Modelling and Experimental Measurements for Non-Linear Crack Growth

A. P. CISILINO; M.H. ALIABADI

Non-Linear Fracture and Damage Mechanics

WIT Press

Año: 2001; p. 1 - 2

This work presents a general boundary element procedure for the numerical modelling of three-dimensional, elasto-plastic fatigue crack growth. The dual elastoplastic boundary element method (EPDBEM) is introduced together with details of its numerical implementation including the evaluation of singular integrals. The point-wise J-integral is evaluated along crack fronts using the energy domain integral (EDI) methodology. The domain expression of the EDI is naturally compatible with the EPDBEM, allowing embedding of the computation of the J-integral within the boundary element formulation in such a way that it accounts for only a small additional computational effort. Finally, the strategy for modelling crack propagation is introduced together with an application example.