ENHANCEMENT OF ENERGY ABSORPTION OF THIN WALLED HEXAGONAL TUBE BY USING TRIGGER MECHANISMS

This paper presents the using of non-linear finite element simulations on the crash behavior and to en hance the energy absorption of the thin walled hexagonal tube subjected to dynamic loading and to decrease the peak load to ensure th e occupants safety during front collisions. Triggers have been applied to the thin walled hexagonal tube. Three trigger geometri es have been applied circular, rectangular and elliptical geometry. Three type of trigger distribution already have been studied. The positions and the size of triggers are also investigated. It was found that tper cent reductions with elliptical trigger revealed the best choice, it shows enhancing in energy absorption about 8 percent and CFE about 13 percent and decreasing in peak force bpercent.