Author(s)

M. Langseth, T. Berstad, O.S. Hopperstad & A.H. Clausen

Abstract

Energy absorption in axially loaded square thin-walled aluminium extrusions M. Langseth, T. Berstad, O.S. Hopperstad & A.H. Clausen Department of Structural Engineering, The Norwegian Institute of Technology, N-7034 Trondheim, Norway ABSTRACT The energy absorption in axially loaded square thin-walled aluminium extrusions in alloy AA6060 tempers T4 and T6 has been studied experimentally. Both static and dynamic tests have been carried out and the primary variables were the wall thickness and impact velociy. In addition, numerical simulations have been done with LS-DYNA3D and reasonable agreement has been found between the analyses and tests. INTRODUCTION One of the main questions which arises when using aluminium in the body structure of a vehicle is its capability to absorb energy during a crash situation. Two types of aluminium body structures are of interest: a sheet unit body and a space frame construction. The sheet concept is based essentially on the same technology as tha

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