An Improved Peridynamic Approach for Prediction of Low Velocity Impact Damage in Fiber Reinforced Composites

摘要

Low velocity impact deformation and damage response of carbon fiber reinforced polymer matrix composites was predicted by an improved peridynamic approach. The improvements include objective evaluation of peridynamic material parameters, intralaminar and interlaminar shear nonlinearity, and strain rate dependence. Demonstration of the work was performed considering a low velocity impact experiment. Effects of each improvement were identified by incorporating them one at a time. Comparisons between experiment and simulations were made of impactor force and displacement, absorbed energy, and delamination.