CRASHWORTHINESS OF SQUARE TUBE WITH REDUCED THICKNESS AT IMPACTED END AND DENT UNDER AXIAL IMPACT

Abstract

Crashworthiness of square tube with reduced thickness at impacted end and dent under axial impact is analyzed by dynamic explicit FEM. Peak impact force can be reduced by reducing thickness of impacted end,but at same time irregular folding comes out. By stamping dent on tube,progressive buckling folding can be achieved. So crashworthiness of tube is improved by reducing thickness at impacted end and stamping dent.

Keywords

• Square tube with reduced thickness at impacted end;Dent;Axial impact;FEM