X-FEM modeling of dynamic ductile fracture problems with a nonlocal damage-viscoplasticity model
A dynamic large X-FEM deformation is presented for modeling dynamic ductile fracture. An explicit algorithm is used with mass lumping, reduced integration and numerical damping. The material nonlinearity is modeled with the JohnsonCook visco-plastic model. The micro void nucleation, growth and coalescence is modeled with an isotropic damage model. Localization of damage and thermal softening is captured with a nonlocal visco-plastic model.
x-fem ductile fracture nonlocal damage visco-plasticity explicit dynamic