Theoretical analysis of tapered thin-walled metal inverbucktube
Theoretical analysis of tapered thin-walled metal inverbucktube
复制标题
DOI：
10.1016/0020-7403(93)90085-9
复制
发表时间：
1993-03
影响因子：
7.3
通讯作者：
E. Chirwa
中科院分区：
文献类型：
--
作者：
E. Chirwa
研究了锥形薄壁金属反扣吸能管在轴向冲击载荷作用下的塑性破坏问题。当管以高达8 ms-1的速度承受动态载荷时，实现了所感知的塌陷机制。一个近似的理论预测的能量吸收和inverbuckling载荷的识别塑性变形过程中遇到的崩溃机制。与实验结果相比，预测的比能量和崩溃模式的负载被发现是在很好的协议。本文还介绍了保证逆屈曲破坏模式的极限，并显示了破坏行为对几何因子D 2 t A的依赖性。
This investigation is concerned with the plastic collapse of a tapered thin-walled metal inverbuckle energy absorbing tube, known as an inverbucktube, subjected to axial impact. The collapse mechanism perceived is achieved when the tube is subjected to dynamic loading at speeds up to 8 ms− 1. An approximate theoretical prediction for the energy absorption and inverbuckling load of the identified plastic deformation processes encountered in the collapse mechanism is developed. The predicted specific energies and loads of collapse modes are found to be in good agreement when compared with the experimental results. Also presented herein are the limits in which an inverbuckling collapse mode is guaranteed and shows collapse behaviour dependency on the geometry factor, D ̄ 2t A.