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Title of Journal: Sci China Technol Sci

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Abbravation: Science China Technological Sciences

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Science China Press

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DOI

10.1007/s11204-016-9386-4

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1869-1900

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Elastoplastic damage model for concrete based on c

Authors: Ji Zhang Jie Li
Publish Date: 2014/10/16
Volume: 57, Issue: 11, Pages: 2278-2286
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Abstract

The aim of this study is to formulate an appropriate free energy potential for inelastic behavior of concrete and construct an elastoplastic damage model on a more rational basis The concept of effective plastic energy storage rates is proposed which are conjugate forces of hardening variables in an undamaged configuration Then an analogy between the evolution of hardening variables and that of a plastic strain is used to postulate the formulation of plastic free energy This formulation reflects the specific characteristics of a certain plasticity model so it can serve well as a thermodynamic link between plasticity and damage By combination of the general formulation of free energy with the double hardening plasticity theory and twoparameter damage expression a thermodynamically wellfounded elastoplastic damage model for concrete is constructed The operator split algorithm is employed and the numerical simulations agree well with a series of material tests

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