The research of parallel computing for large-scale finite element model of wheel/rail rolling contact

With the development of computer technology and calculation methods, the finite element method to analyze wheel/rail rolling contact became popular. For the increasing requirement of calculation scale and computing accuracy, the parallel computing method and parallel computing environment become an effective way to solve this problem. The parallel computing methods of contact problem is analyzed firstly. Then, the contact algorithm and parallel computing of ABAQUS is introduced. And the parallel computing environment using MPI in ABAQUS is put forward. On the basis of cluster, some different finite element model is solved by implicit and explicit solution. It is found that the mesh size of wheel/rail contact field is refined to 0.75mm in order to ensure accuracy for engineering. At last, the parallel computing for the contact problem of wheel/rail is discussed using the speedup and efficiency.