Collapse behavior of thin-walled cylinder tubes under quasi-static axial loading

摘要

thin-walled cylinder tubes of different sizes made of copper and aluminum under axial compression test were performed in an Instron machine. The diameter to thickness (DIt) and length to diameter (LID) ratios were varied from 18.4 to 50.76 and 1 to 3 for both metals respectively. All these tubes deformed in several modes and the effects of both ratios on this failure mode are appropriately studied. Load-displacement charts as a comparison behavior between copper and aluminum metals are presented. The amount of absorbed energy with maximum and average collapse loads are tabulated to show which of the two metal's behavior is better in terms of energy absorption principle. Therefore, results presented are of help in understanding the collapse behavior of circular tubes under quasi-static axial loading when used in energy absorption dissipation systems.