A thermodynamics-based cohesive model for interface debonding and friction
| Autor: | Giang D. Nguyen, Irene Guiamatsia |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Work (thermodynamics)
Materials science Friction Constitutive equation Plasticity Coupling Materials Science(all) Modelling and Simulation Ultimate tensile strength Coupling (piping) General Materials Science business.industry Mechanical Engineering Applied Mathematics Delamination Structural engineering Constitutive model Dissipation Interface Condensed Matter Physics Mechanics of Materials Modeling and Simulation Dissipative system Thermodynamics business |
| Zdroj: | International Journal of Solids and Structures. 51(3-4):647-659 |
| ISSN: | 0020-7683 |
| DOI: | 10.1016/j.ijsolstr.2013.10.032 |
| Popis: | A constitutive model for interface debonding is proposed which is able to account for mixed-mode coupled debonding and plasticity, as well as further coupling between debonding and friction including post-delamination friction. The work is an extension of a previous model which focuses on the coupling between mixed-mode delamination and plasticity. By distinguishing the interface into two parts, a cracked one where friction can occur and an integral one where further damage takes place, the coupling between frictional dissipation and energy loss through damage is seamlessly achieved. A simple framework for coupled dissipative processes is utilised to derive a single yield function which accurately captures the evolution of interface strength with increasing damage, for both tensile and compressive regimes. The new material model is implemented as a user-defined interface element in the commercial package ABAQUS and is used to predict delamination under compressive loads in several test cases. |
| Databáze: | OpenAIRE |
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