爆炸载荷作用下金属圆柱壳的一种创新失效准则

An Innovative Failure Criterion for Metal Cylindrical Shells under Explosive Loads.

作者信息

Li Yan, Wang Wen, Chen Zhanfeng

机构信息

School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.

Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Weifang 262700, China.

出版信息

Materials (Basel). 2022 Jun 21;15(13):4376. doi: 10.3390/ma15134376.

DOI:10.3390/ma15134376

PMID:35806501

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9267845/

Abstract

Metal cylindrical shells are widely used to store and transport highly hazardous chemicals. The impact resistance of metal cylindrical shells under an explosive load is a concern for researchers. In this paper, an innovative failure criterion considering the time effect is proposed for metal cylindrical shells under explosive loads. Firstly, based on the maximum shear stress criterion, an innovative failure criterion containing the time effect is provided. Then, a metal cylindrical shell model is established. Next, a failure pressure equation for metal shells under an explosive load is proposed based on the innovative failure criterion. Lastly, the proposed equation is verified by numerical simulation. The results indicate the failure pressure equation for a metal cylindrical shell under an explosive load uses the finite element method. Our research is of significance for fully understanding the failure mechanism of piping and pressure vessels under impact load.

摘要

金属圆柱壳被广泛用于储存和运输高度危险的化学品。爆炸载荷作用下金属圆柱壳的抗冲击性是研究人员关注的问题。本文针对爆炸载荷作用下的金属圆柱壳，提出了一种考虑时间效应的创新失效准则。首先，基于最大剪应力准则，给出了一个包含时间效应的创新失效准则。然后，建立了金属圆柱壳模型。接着，基于该创新失效准则，提出了爆炸载荷作用下金属壳的失效压力方程。最后，通过数值模拟对所提出的方程进行了验证。结果表明，爆炸载荷作用下金属圆柱壳的失效压力方程采用了有限元方法。我们的研究对于全面理解冲击载荷作用下管道和压力容器的失效机理具有重要意义。