【摘要】 钢管拼装吸能元件在爆炸载荷作用下的大变形问题,对于抗爆结构的吸能装置设计具有重要意义。本文在对单个钢管动力压扁过程研究的基础上,根据实验分析了拼装钢管在径向受爆炸载荷作用的塑性行为,并且基于虚速度原理建立了八塑性铰机构模态解方程,描述了拼装钢管受爆炸载荷作用的位移速度场,最后进行了实验验证。更多还原

【Abstract】 Large deformation in the energy-absorbing unit of a multi-row steel pipe structure under explosive loading is of great significance to the design of an explosion-resistant energy-absorbing unit. From experiments, the plastic behavior of the steel pipe assembly was analyzed when radial explosive loading is exerted. Based on the principle of virtual velocity, the modal solution to the eight-plastic-hinge pattern was established, and the displacement speed field of steel pipes under radial explosive loading was described and verified in experiments.更多还原