Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8900708 | Applied Mathematics and Computation | 2018 | 20 Pages |
Abstract
This paper reports a multiscale analysis and numerical algorithms for the elastic wave equations with rapidly oscillating coefficients. We mainly focus on the first-order and the second-order multiscale asymptotic expansions for the wave equations, which is proved to enjoy an explicit convergence rate. In our method, the homogenized equations are discretized by the finite element method in space and a symplectic geometric scheme in time. The multiscale solutions are then obtained efficiently by the standard multisclae asymptotic expansion framework. Several numerical simulations are carried out to validate the predicted convergence results.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Qiao-li Dong, Li-qun Cao, Xin Wang, Ji-zu Huang,