Simulation Crack growth in pressure vessel by using XFEM method in Abaqus скачать в хорошем качестве

Simulation Crack growth in pressure vessel by using XFEM method in Abaqus

XFEM has been used to model several applied mechanics problems. Quasi static crack propagation in 2D and 3D .XFEM allows the discontinuties not align with the finite element mesh, then crack propagation simulation without remeshing. However, the numerical integration of elements cut by the discontinuity require special treatment. The most commonly adopted method is to divide element into subdomains on two sides of the line of discontinuty. This method is flexible but not appropriate for history-dependent material where the projection of variables from old Gauss points to new ones are inevitable. In order to replace this method, Giulio Venture proposed one method without element decomposition into sub domains. However, until now, this method is limited to elements completely cut by discontinuity.