摘要
运用AUTODYN有限元软件,基于流-固耦合方法,分析了某型号圆柱形救生舱在巷道内的冲击响应规律。研究表明,冲击载荷峰值压力为2.14 MPa时,救生舱受前端面和尾端面冲击的最大等效应力均未达到强度极限,迎爆面中心点的最大位移也均未超过失效准则的要求,救生舱强度符合国家标准。当迎爆面换成平面结构时,在相同的爆炸冲击下,救生舱发生了强度失效和变形失效,这说明采用凸出结构的迎爆面可以增强救生舱的抗冲击性能,相关结论对救生舱的设计具有一定工程价值。
Using the commercial FE software AUTODYN, dynamic responses of a type of cylindrical rescuechamber subjected to explosion impact in a tunnel were analyzed based on the fluid-solid coupling method. Simulationresults showed that under 2. 14 MPa peak pressure of impact loading, the maximum equivalent front end surface shock or the back end surface shock was below the ultimate strength ; the maximum displacement of thec n te r of the blast surface does not exceed the requirements of failure criteria, so the strength the requirements of national standards; when the blast surface is changed into a planar structure,deformation failure occurr under the same explosion impact,so the blast surface of a protmding strncture can enhance theanti-impact ability of the rescure chamber. The results provided a scientific foundation for design modification and safe useof rescue chambers.
出处
《振动与冲击》
EI
CSCD
北大核心
2016年第11期28-33,共6页
Journal of Vibration and Shock
基金
国家自然科学基金项目(11272057)
关键词
救生舱
爆炸冲击
流-固耦合
强度分析
数值模拟
rescue chamber
explosion impact
fluid-solid coupling
strength analysis
numercal simulation
