Elastoplastic-Damage Model for Hydrostatic Sensitive Metals

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Azizsoltani, Hamoon | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40013 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Kazemi, Mohammad Taghi
Abstract:
In this work a model of anisotropic plastic-damage , using thermodynamic framework is going to be proposed. This model was applied in simulating metals behavior. Using this model, besides plastic behavior will help us observe the impact of growth and coalescence of microdefects of material. Generally anisotropic damage application can demonstrate a more realistic behavior in material modeling. To get consistency equation and microdefects growth condition, irreversible thermodynamic will be used. Firstly, the plastic relationships have been written in undamaged configuration; then, using relationships between damaged and undamaged configuration, plastic equations are generalized to damage configuration ones. Finally, through finite elements method and using newton-raphson nonlinear algorithm, numerical simulations of some experimental specimen were simulated relationships precision have been verified.
Keywords:
Thermodynamics ; Newton-Raphson Method ; Failure Modes ; Anisotropic Plastic Damage ; Microdefect

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