The term Continuum Damage Mechanics has been used to models materials which are characterized by loss of stiffness, i.e. by a decrease in their stiffness modulus. Damage models have also been used to simulate different materials (fragile and ductile), which are fundamentally characterized by irreversible material degradation. Physically speaking, we can describe the degradation of mechanical material properties as processes in which the initiation and growth (propagation) of micro-defects such as micro pores and microcracks take place.
KeywordsDamage Model Helmholtz Free Energy Mullins Effect Elastic Strain Energy Density Internal Energy Dissipation
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