Search for dissertations about: "isotropic damage"
Showing result 1 - 5 of 33 swedish dissertations containing the words isotropic damage.
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1. Plasticity and Damage Mechanics for Modeling Concrete Failure
Abstract : Concrete structures exhibit strongly non-linear and complex mechanical behavior. Hence, they are nowadays often analyzed by means of the finite element method, whereby a realistic description of the material behavior is decisive for the validity of the results. READ MORE
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2. Plasticity Driven Damage and Void Growth
Abstract : Plasticity induced damage evolution is considered using a thermodynamical approach. Different postulates on how to include the effects of damage in the constitutive equations have been studied. The results reveal that a mapping, similar to that of the stress, of both the kinematic and isotropic hardening variables is to be preferred. READ MORE
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3. Chromium martensitic hot-work tool steels : damage, performance and microstructure
Abstract : Chromium martensitic hot-work tool steel (AISI H13) is commonly used as die material in hot forming techniques such as die casting, hot rolling, extrusion and hot forging. They are developed to endure the severe conditions by high mechanical properties attained by a complex microstructure. READ MORE
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4. Modelling of Inelastic Effects in Metal Sheets and Identification of Material Parameters
Abstract : The continuum modelling of the macroscopic behaviour of metallic sheets and the identification of corresponding material parameters for models selected are dealt with in the thesis. Thermodynamics with internal variables provides a framework for the derivation of the models. READ MORE
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5. Mechanical Analysis of Melamine-Formaldehyde Composites
Abstract : Planar random fibre composite materials based on melamine-formaldehyde (MF), one of the hardest and stiffest isotropic polymers that is known, have been developed recently on an industrial scale. In this thesis the mechanical behaviour of these materials is systematically investigated for the first time. READ MORE