Dynamic Rate Dependent Elastoplastic Damage Modeling of Concrete Subject to Blast Loading: Formulation and Computational Aspects

Abstract

Abstract : Advanced elastic-damage and elastoplastic-damage models are presented within the frameworks of both continuum damage mechanics and micromechanical damage mechanics. Novel energy-based coupled elastoplastic continuum damage theories and computational algorithms are proposed, including rate-dependent isotropic and anisotropic damage models. Efficient constitutive algorithms and extensive experimental validations are also performed. In addition, novel finite deformation elastoplastic continuum damage models are developed to account for large strains and high rates. On the other hand, advanced and state-of-the-art two- and three-dimensional micromechanical anisotropic damage models are proposed to physically simulate micromechanical microcracking kinetics (cleavage 1 and cleavage 2 processes) and damaged overall compliances for concrete materials under tensile and compressive loadings. These results are innovative, fundamental, and very useful in advanced damaged modeling.