内爆炸荷载作用下某管状结构安全性分析  

Safety Analysis of Tubular Structure Resisting Inner Explosion Loads

作　　者：夏长富[1] 叶晓华[1] 苏海军[1] 庞文仁[1] 

机构地区：[1]工程兵指挥学院,徐州221004

出　　处：《爆破》2009年第4期108-112,共5页Blasting

摘　　要：为研究内爆炸载荷作用下某厚壁管状结构的安全性,对圆管管壁的动态响应过程和楔子对圆管末端的冲击作用进行分析。根据应力波理论和层裂破坏准则,探讨圆管的破坏机理和可能的破坏形式。采用流固耦合方法,对管状结构的动态响应过程进行数值分析。在试验和数值模拟的基础上,总结圆管末端的破坏模式,剖析影响结构安全性的关键因素,为某管状结构在防护工程中的应用提供技术参考。In order to study the safety of tubular structure resisting inner explosion loads, the process of dynamic response to tube wall and the impact effeet of wedge to tube end were analylzed. The failure mechanism and modes of tube was discussed based on stress wave theory and spalling criterion. The process of dynamic response was numerically simulated by FSI in LS-DYNA. Based on the experiment and numerical simulation, the failure mode of tube end is summarized and the critical factors influencing the structure safety is also analyzed. It provides technologic reference to protective engineering of tubular structure.

关 键 词：内爆炸 管状结构 安全性分析 数值模拟 

分 类 号：O383[理学—流体力学]