Adaptive 3D Remeshing for Metal Forming Simulation

An alternative remeshing methodology for 3D Abaqus explicit analyses which utilizes mesh mapping is presented. Excessive element distortion in 3D large deformation analyses necessitates remeshing, however in Abaqus explicit, the standard 3D remeshing techniques limits the analyst’s choice of element type. The presented technique allows remeshing of 3D perfectly plastic fully integrated higher order elements. The remeshing occurs in regions of high equivalent plastic strain or high equivalent plastic strain rate. The remeshing procedure maps the old boundary conditions, stress, and inelastic strain from the old distorted mesh. A benchmark comparing the results of an analysis using the remeshing technique to a known solution showed less than 0.2% error as a result of the remeshing procedure.