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 rescue chamber subjected to explosion impact in a tunnel were analyzed based on the fluid-solid coupling method.Simulation results showed that under 2.14MPa peak pressure of impact loading,the maximum equivalent stress generated under the front end surface shock or the back end surface shock was below the ultimate strength;the maximum displacement of the center of the blast surface does not exceed the requirements of failure criteria,so the strength of the rescue chamber meets the requirements of national standards;when the blast surface is changed into a planar structure,the strength failure and deformation failure occurr under the same explosion impact,so the blast surface of a protruding structure can enhance the anti-impact ability of the rescure chamber.The results provided a scientific foundation for design modification and safe use of rescue chambers.
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