RESEARCH ON MATERIAL MODELS IN FINITE ELEMENT ANALYSIS OF HIGH-SPEED LOADING

This article discusses the modeling features of high-speed loading of textile materials using the finite element method (FEM). Several orthotropic material models in LS-DYNA were analysed using an eight-node element with a single integration point under shear conditions. The results revealed significant (up to tenfold) differences in shear-plane stresses and up to 10 % deviation in the element’s internal energy. The importance of proper parameter selection, energy balance monitoring, and accounting for the hourglass effect is emphasised for reliable simulation. The study concludes that accurate orthotropic model settings and careful control of the finite element mesh are essential in high-speed loading scenarios.