Abstract
AbstractMicromechanical model is developed to determine be macroscopic thermomechanical behavior of metallic coated sheets. To study the thermoelastoplastic behavior of such heterogeneous materials (in general, substrate + inter‐phase + coating), classical localization and homogenization techniques are used in the framework of continuum mechanics with small perturbations hypothesis. Coatings are considered as a multi‐laminated medium in which every layer or phase exhibits an anisotropic thermoelastoplastic behavior with plane and perfect interfaces. The real heterogeneous material is replaced by a fictitious homogeneous one called Equivalent Homogeneous Material (E.H.M.). To consider the effect of anisotropy, the Hill's yield criterion for anisotropic strain‐hardening materials is used The interface problem is solved by introducing the interfacial operators of solid mechanics. One general “three‐phase” model is proposed and considered in the case of damaged coating by taking into account the coupling between plasticity and damage phenomena. First results show the effects of damaged or undamaged metallic coating on elastoplastic behavior of coated steel sheets.
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Schedule a callMore From: ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
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