Hybrid phase field simulation of dynamic crack propagation in functionally graded glass-filled epoxy

摘要: Abstract Numerical simulation of dynamic crack propagation in functionally graded glass-filled epoxy (FG) beams using a regularized variational formulation is presented. The Griffith’s theory based hybrid phase field approach for diffusive fracture taken, which able to accurately simulate complex behaviors growth FGMs. FG under impact loads experimented by Kirugulige and Tippur (Exper. Mech. 2006; 46:269–281) are considered, taking the same configurations, material property, location, other relevant assumptions. paths, length, velocity, energies, etc., computed through model numerically analyzed, some those results directly compared with experimental data. Due lack necessary information regarding loading profiles boundary conditions setting tests, simulations become difficult as an inappropriate definition can significantly alter outputs numerical solutions. This issue important thus discussed. Two specific profiles, constant linear displacement velocities, taken into account, while free-free considered. We show that good agreements paths between experiment approaches be obtained. also confirm significant effect elastic gradients on final paths. Similar results, we found path kinks when situated stiffer side compliant specimen.