An Enriched Finite Element Method with Appropriate Interpolation Cover Functions for Transient Wave Propagation Dynamic Problems

A novel enriched finite element method (EFEM) was employed to analyze the transient wave propagation problems. In present method, traditional approximation by employing appropriate interpolation covers. We mathematically and numerically showed that EFEM possessed important monotonic convergence property with decrease of used time steps for problems when unconditional stable Newmark integration scheme integration. This attractive markedly distinguishes from FEM Two typical numerical examples were given demonstrate capabilities method.