Impact Response and Energy Distribution of Low Velocity Impact on Composite Laminates

摘要

The dynamic characteristics of composite laminates are very complex because many concurrent phenomena occur with laminate failure under impact load. In order to research impact response and energy distribution of composite laminates in different low-impacted energies, Hashin failure criteria was taken based on the finite element software of ABAQUS, combined progressive damage stiffness reduction scheme with viscous regularization. The impact response was analyzed from the points of impact energy, contact pressure,internal energy and damage dissipation energy. The result showed that the peak of contact pressure moved forward and the different value of internal energy and damage dissipation energy became bigger with the increase of impact energy. Furthermore, impact energy would be transformed into many types of energies and the distribution of impact energy was discussed.