Shixue Liang1, *, Hankun Liu2
CMES-Computer Modeling in Engineering & Sciences, Vol.122, No.3, pp. 1015-1038, 2020, DOI:10.32604/cmes.2020.07799
Abstract A multi-scale damage model of concrete is proposed based on the concept of
energy equivalent strain for generic two- or three-dimensional applications. Continuum
damage mechanics serves as the framework to describe the basic damage variables,
namely the tensile and compressive damage. The homogenized Helmholtz free energy is
introduced as the bridge to link the micro-cell and macroscopic material. The crack
propagation in micro-cells is modeled, and the Helmholtz free energy in the cracked
micro-structure is calculated and employed to extract the damage evolution functions in
the macroscopic material. Based on the damage energy release rates and damage
consistent condition, the… More >
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