A Large-Deformation Gradient Damage Model for Single Crystals Based on Microdamage Theory

Ozgur Aslan, Emin Bayraktar
2020 Applied Sciences  
This work aims at the unification of the thermodynamically consistent representationof the micromorphic theory and the microdamage approach for the purpose of modeling crack growthand damage regularization in crystalline solids. In contrast to the thermodynamical representationof the microdamage theory, micromorphic contribution to flow resistance is defined in a dual fashionas energetic and dissipative in character, in order to bring certain clarity and consistency to themodeling aspects. The
more » ... eling aspects. The approach is further extended for large deformations and numericallyimplemented in a commercial finite element software. Specific numerical model problems arepresented in order to demonstrate the ability of the approach to regularize anisotropic damage fieldsfor large deformations and eliminate mesh dependency.
doi:10.3390/app10249142 fatcat:ioqcaabkinbgxftso2x6zj5qgi