Damage theory applied to the analysis of composite materials subjected to a loss of adherence between its constituents
✍ Scribed by M.K. Alves; N. Kikuchi
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 902 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0997-7538
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✦ Synopsis
Here, we present a theory and propose a numerical algorithm for the solution of dissipative problems involving a class of composite materials which are assembled using an adhesive element. We consider the interface between two different components which undergo a unilateral adhesive contact. The generalized forces associated with the mathematical model are obtained from non convex super potentials by forming their local subdifferentials. The complementary equation is derived by the introduction of a pseudo-potential of dissipation and the application of the hypothesis of normal dissipation. In order to circumvent the non-differentiability of these potentials, we make use of a regularization process. A Galerkin finite element method together with an explicit finite difference method are applied to obtain solutions of two dimensional problems. 0 Elsevier, Paris.