Finite element approximations of nonlinear elastic waves

Author:
Charalambos G. Makridakis

Journal:
Math. Comp. **61** (1993), 569-594

MSC:
Primary 73V05; Secondary 65M60, 73D15, 73D35

MathSciNet review:
1195426

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Abstract: In this paper we study finite element methods for a class of problems of nonlinear elastodynamics. We discretize the equations in space using Galerkin methods. For the temporal discretization, the construction of our schemes is based on rational approximations of and . We analyze semidiscrete as well as second- and fourth-order accurate in time fully discrete methods for the approximation of the solution of the problem and prove optimal-order error estimates. For some schemes a Taylor-type technique is used so that only linear systems of equations need be solved at each time step. In the proofs we need various estimates for a nonlinear elliptic projection, the proofs of which are also established in the paper.

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DOI:
https://doi.org/10.1090/S0025-5718-1993-1195426-X

Article copyright:
© Copyright 1993
American Mathematical Society