Surface Offset-Based Remeshing Algorithm of Generating Hexahedral Elements

A new algorithm of generating the hexahedral elements was proposed. It is based on the surface offset theory, and the brick elements are generated layer by layer from outside to inside. The key methods were investigated, and some specific issues were fixed. Using this algorithm, the mesh quality in outer layers is evidently better than that at inner's. Based on this algorithm, a hexahedral element remeshing system was established, and several industrial forging processes were then simulated. The results show that the algorithm is reliable and can be further used for any complicated forging process to perform remeshing during the rigid plastic finite element method numerical simulation.