基于AUTODYN、LS-DYNA的救生舱抗爆仿真试验  

Simulation test of rescue chamber under the explosive load based on the AUTODYN and LS-DYNA model

作　　者：王云艳[1] 何宁[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《安全与环境学报》2014年第2期9-12,共4页Journal of Safety and Environment

摘　　要：为了减少矿用可移动式救生舱抗瓦斯爆炸能力物理实验室的建设费用、试验成本,缩短试验周期,用AUTODYN模拟矿井瓦斯在巷道内的冲击压力波传播,用LS-DYNA模拟救生舱在冲击波超压作用下的动态响应,获得了作用时间为300 ms、救生舱迎爆面最大超压为0.6 MPa时,冲击压力波传播到救生舱各舱段相应基本单元面上的超压;将模拟所得超压作用到救生舱上,获得了在巷道内受瓦斯爆炸影响的救生舱的应力历程和变形历程。仿真结果表明,救生舱的强度、刚度和密封等满足标准要求。The present article is about a simulation test of refuge chamber under the explosive load based on the AUTODYN and LS-DYNA Model in hoping to reduce the building cost for physical laboratories and organization of physical tests, as well as to shorten the testing cycle for the anti-gas explosion capability of the said refuge chambers. As a matter of fact, we have simulated the impact overpressure of the pressure wave propagation to the refuge chamber by using AUTODYN model in the coal mine tunnel and worked out the actual course of the impact overpressure. Statistically speaking, the impact overpressure acts on the basic unit surfaces when the biggest impact overpressure of the front panel is 0.6 MPa and the action time is 300 ms. In case the simulated impact overpressure is applied to the said chamber, it would be possible to use the LS-DYNA model to simulate the dynamic response to obtain the stress and the deformation course of the chamber following the gas explosion in the tunnel. And, here, the maximum stress that has been worked out is equal to 348.6 MPa, which is likely to occur at the end of the refuge chamber, with the maximum deformation being 12.80 mm in the center of the entrance door. Meanwhile, the maximum stress of the contact surface between the entrance doors and door frame is 235.7 MPa with the maximum stress of the escape door being 98.5 MPa in the center and the maximal displacement of the contact surfaces being 0.76 mm. However, the destructive damage will not occur if the maximum stress is less than the ultimate strength of the material. And, neither will the plastic deformation occur in case the maximum stress of the contact surfaces between the door and door frame is less than the yield strength and the maximal displacement of the contact surfaces is less than 2 mm. Thus, the simulation results have eventually shown that the construction demands of the strength, the stiffness and the sealing of coal mine mobile refuge chamber can all be made fully satisfied by all the above mentioned techni

关 键 词：矿山安全 可移动式救生舱 物理试验 仿真试验 

分 类 号：TD792[矿业工程—矿井通风与安全]