Based on the auxiliary space method, a preconditioner is studied in this paper for linear systems of equations arising from higher order finite element (FEM) discretizations of linear elasticity equations. The main idea, which is proposed by Xu (Computing 1996; 56:215-235) for the scalar PDE, is to
A GENERALIZED NEWTON METHOD FOR HIGHER-ORDER FINITE ELEMENT APPROXIMATIONS IN NON-LINEAR ELASTICITY
β Scribed by P. PAPADOPOULOS; R. L. TAYLOR
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 695 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0029-5981
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β¦ Synopsis
A generalized Newton method is proposed in conjunction with a higher-order Lagrangian finite element discretization of bodies undergoing finite elastic deformations. The method is based on a gradient-like modification of the Newton method, designed to suppress the sensitivity of higher-order elements during the early iterations, thus allowing for solutions to be obtained using moderately large step-sizes.
π SIMILAR VOLUMES
In the present contribution, an innovative stabilization technique for two-dimensional low-order ΓΏnite elements is presented. The new approach results in an element formulation that is much simpler than the recently proposed enhanced strain element formulation, yet which gives results of at least th