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azizsoltani--hamoon
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Elastoplastic-Damage Model for Hydrostatic Sensitive Metals
, M.Sc. Thesis Sharif University of Technology ; Kazemi, Mohammad Taghi (Supervisor)
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...
Numerical characterization of anisotropic damage evolution in iron based materials
, Article Scientia Iranica ; Vol. 21, issue. 1 , 2014 , pp. 53-66 ; ISSN: 10263098 ; Javanmardi, M. R ; Azizsoltani, H ; Sharif University of Technology
2014
Abstract
A damage plastic constitutive model for metals is proposed in this paper. An anisotropic damage tensor and a damage surface are adopted to describe the degradation of the mechanical properties of metals. The model is developed within the thermodynamic framework and creates an anisotropic damage plastic model with the ability to describe the plastic and damage behavior of iron based materials. According to the principle of strain energy equivalence between the undamaged and damaged materials, the linear elastic constitutive equations for the damaged material expressed a stiffness tensor in the damaged configuration. The damaged material is modeled using the constitutive laws of the undamaged...