Crack Analysis Method Based on a Combination of Meshfree Method and Continuous Damage Mechanics
DOI:
https://doi.org/10.13052/ejcm2642-2085.3461Keywords:
Element-free Galerkin (EFG) method, Continuous damage mechanics (CDM)model, damage initiation, damage evolution processAbstract
In this paper, the application method of continuum damage mechanics in the framework of the element-free method is established. The method of mapping the damage parameters used in continuous damage mechanics (CDM) to the nodes and damping of the element stiffness matrix by the damage parameters are discussed. Since the method of constructing the global stiffness matrix from the element stiffness matrix in the element-free Galerkin method, one of the typical meshfree methods, is different from the finite element method, the continuous damage mechanical model as in the finite element method cannot be applied. To predict the damage initiation and crack propagation directions, the maximum principal stress criterion is used and CDM model is used to predict the damage evolution process under quasi-static loading. The calculated results are compared with several experimental results and show good agreement.
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