Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Structural Parameters and Materials on the Mechanical Characteristics of Expansion Tube

Version 1 : Received: 15 July 2020 / Approved: 20 July 2020 / Online: 20 July 2020 (08:10:40 CEST)

How to cite: Qi, Z.; Zhang, Y.; Lin, A.Y. Effect of Structural Parameters and Materials on the Mechanical Characteristics of Expansion Tube. Preprints 2020, 2020070458 (doi: 10.20944/preprints202007.0458.v1). Qi, Z.; Zhang, Y.; Lin, A.Y. Effect of Structural Parameters and Materials on the Mechanical Characteristics of Expansion Tube. Preprints 2020, 2020070458 (doi: 10.20944/preprints202007.0458.v1).

Abstract

Expansion tube is ideal energy absorber which dissipates kinetic energy through plastic deformation and friction. There is an urgent need to understand the influence of key parameter, e.g. semi angle, tube material, and friction coefficient, on the mechanical response and energy absorption characteristics of expansion tube. In the present work, the material properties of the tubes were tested under quasi-static loading condition, and the numerical simulations were carried out by using commercial software ABAQUS. Based on the validated finite element simulation, all the semi angle, tube material, and friction have significant effects on the energy absorption capacity of expansion tube. The expansion tube with high tensile stress of parent material have high energy absorption capacity, while the specific energy absorption is linear with the tensile stress/density of tube material. This work would give a guidance to the structural design and parent materials selection for expansion tubes.

Subject Areas

expansion tube; mechanical properties; energy absorption; parent material comparison; plastic deformation

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