Analysis and numerical solution of a frictionless contact problem for electro-elastic–visco-plastic materials
✍ Scribed by Weimin Han; M. Sofonea; Kamran Kazmi
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 488 KB
- Volume
- 196
- Category
- Article
- ISSN
- 0045-7825
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✦ Synopsis
A quasistatic frictionless contact problem is studied, modelled with the Signorini contact condition with a gap function. The material behavior is modelled with an electro-elastic-visco-plastic constitutive law, allowing piezoelectric effects. A weak formulation for the model is given in the form of a coupled system for the displacement, the stress, the electric displacement and the electric potential fields. Existence and uniqueness of a weak solution is proved. A fully discrete scheme is introduced for solving the problem. Under certain solution regularity assumptions, an optimal order error estimate is derived. Some numerical results are reported on a two-dimensional test problem.