Simulation of impact failure of tubular samples made of composite material, depending on the loading rate

In this paper, a model that takes into account the dependence of strength properties on damage rate is considered for modelling impact failure composite materials. The constants material are determined basis experimental diagrams to compression and shear loading unidirectional composite, which exhibit nonlinear strain rate. proposed implemented Abaqus finite element modeling software case three-dimensional stress state. As an example numerical modeling, we consider tubular specimens made carbon fiber with epoxy matrix layers different orientations, commonly used determining characteristics energy absorption. Diagrams obtained. influence chamfer (taper cross-section) edge specimen diagram at initial stage process, serves as initiator crushing, studied. approach allows us estimate magnitude peak amplitude associated crushing chamfer. addition, loading, maximum rates occur, entails hardening material, also expressed in increase amplitude. If analysis neglects effects geometry chamfer, result may be underestimation reaction, especially process. absence described structures lead significantly incorrect results complete zero reaction. developed effective design testing damping elements sensitive