Numerical investigation of energy absorption semi apical angel in conical grooved tubes under dynamic axial load and comparing quasi-static and dynamic loading

Subject Areas : Impact

Nima Asadi Dehmirahmadi ¹ , Mohammad Javad Rezvani ²

1 - Engineer
2 - مدیر پژوهش، عضو هیات علمی

Received: 2016-12-25 Accepted : 2016-12-31 Published : 2014-11-22

Keywords: Specific energy absorption, semi-apical angel, Crush force efficiency, energy absorbing bumpers, Total energy absorbed, average energy absorbed,

Abstract :

The purpose of this article is to determine energy absorbing of empty conical tubes. In these innovated models, there are a handful of rectangular grooves around the inner and outer surface of the tube. In this study, effects of number of grooves and their semi apical angel on Energy Absorption, Specific Energy Absorption (SEA), maximum crush load and Crush Force Efficiency (CFE) are considered. The energy absorbing system can be used in the aerospace industry, shipbuilding, automotive, railway industry and elevators used to absorb impact energy. Finally, appropriate geometric parameters and the best examples of criteria considered with respect to the objectives, are introduced.