The Implementation of Inter-Element Model for Crack Growth Simulation
The implementation of inter-element model to simulate crack propagation by using finite element analysis with adaptive mesh is presented. An adaptive finite element mesh is applied to analyze two-dimension elastoplastic fracture during crack propagation. Displacement control approach and updated Lagrangean strategy are used to solve the non-linearity in geometry, material and boundary for plane stress crack problem. In the finite element analysis, remeshing process is based on stress error norm coupled with h-version mesh refinement to find an optimal mesh. The crack is modeled by splitting crack tip node and automatic remeshing calculated for each step of crack growth. Crack has been modeled to propagate through the inter-element in the mesh. The crack is free to propagates without predetermine path direction. Maximum principal normal stress criterion is used as the direction criteria. Several examples are presented to show the results of the implementation.
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
A. K. Ariffin et al., "The Implementation of Inter-Element Model for Crack Growth Simulation", Key Engineering Materials, Vols. 261-263, pp. 687-692, 2004