Abstract:
This paper details the results from numerical simulations of bumper beam-longitudinal systems subjected to a 40% offset impact. The authors utilized the non-linear finite element code LS-DYNA to create a numerically robust and accurate representation of the system's behavior. The study compared an industrial-like modeling procedure with a procedure that incorporated a user-defined material model, which included state-of-the-art anisotropic plasticity, isotropic strain, and strain-rate hardening rules, as well as ductile fracture criteria. Both shell and solid elements were used for discretizing the bumper beam-longitudinal set-up. The numerical crash simulations demonstrated good agreement with experimental data regarding the overall deformation mode and energy dissipation. The simulations were capable of providing relatively accurate crash results, highlighting the effectiveness of Finite Element Analysis in predicting the behavior of these systems under impact loading.
