关键词: 冲压筋 薄壁管 轴向压缩 吸能特性

Abstract: To study the axial energy-absorption performance of thin-walled tubes of energy absorbing elements in a vehicle body, thin-walled tubes with single and double hat and with stiffeners were designed. Then the quasi-axial compression tests were carried out. Test results show that the energy-absorption performance of the thin-walled tubes is increased when the number of stiffeners is increased, but the quasi-axial steady ability is decreased.

Key words: stiffen half, thin-walled tubes, axial compression, energy-absorbing behavior