An Investigation on Dynamic Response of Truncated Thick Walled Cones with Edge Ring under Axial Compressive Impact Load

Abstract

In this study, steel based combined truncated conical cones with end caps having different cone angles (20°, 25° and 30°) were investigated as an energy absorber under axial impact loading. The structure was modelled between two rigid plates and crushed by a striker mass of 1000kg with 6 different impact velocities (5m/s, 10 m/s, 15 m/s, 20 m/s, 25 m/s, 30 m/s). Structures have been modelled in ABAQUS CAE environment and simulations have been performed in explicit solver package. According to simulation results, peak reaction force , mean reaction force , absorbed energy , specific energy absorption (SEA) and crush force efficiency (CFE) values were calculated in order to compare the results of crash performance of the models.

Keywords: finite element method, energy absorbing, truncated cone, crashworthiness.