On the modes and the absorption energy of static progressive buckling of cylinder shells

Abstract

Experiments were performed to study the behavior of axially crushed aluminum round tubes. The mean radius to thickness (R/h) ratios of these varied from 15 to 75. The modes of collapse and the mean collapse loads obtained in these tests are presented. A simple estimation on the energy-absorption efficiency is presented by using the buckling stress expression based on the tangent modulus theory and the expression of mean collapse load considering the formation of plastic hinges. The estimation results are compared with the experiments.