摘要
针对井下救生舱在爆炸冲击载荷作用下的强度问题,在瞬态动力学软LS-DYNA中建立了整体的爆炸冲击载荷和流固耦合结构响应有限元模型,通过爆炸算法生成流场冲击载荷,并计算冲击载荷在空气中的传播,通过流固耦合计算冲击载荷下的救生舱结构动态响应。计算结果发现:最大载荷出现在最接近爆炸源的端面上,由于端面较小,所以结构变形不大,最大变形出现在救生舱的侧壁。所建立的有限元模型完整覆盖了救生舱爆炸冲击全过程,结果更准确,对救生舱的研制具有一定工程价值。
Aiming at the strength problem of the underground rescue cabin under explosion impact load, a finite element model of overall explosion impact load and fluid-solid coupling structure response is established in transient dynamic soft LS-DYNA. The flow field impact load is generated by explosion algorithm, and the propagation of the impact load in the air is calculated. The dynamic response of the rescue cabin structure under the impact load is calculated by the fluid-solid coupling method. The results show that the maximum load occurs on the end surface closest to the explosion source, and the structural deformation is small because the end surface is small, and the maximum deformation occurs on the side wall of the cabin. The established finite element model covers the whole process of the explosion and shock of the cabin, and the results are more accurate. It has a certain engineering value for the development of rescue cabin.
作者
张帆
杨元华
何小旭
邓宇
Zhang Fan;Yang Yuanhua;He Xiaoxu;Deng Yu(Sichuan Institute of Aerospace Systems Engineering,Chengdu 610100,China)
出处
《系统仿真学报》
CAS
CSCD
北大核心
2019年第12期2853-2858,共6页
Journal of System Simulation
关键词
井下救生舱
爆炸冲击
数值分析
rescue capsule
blast impact
numerical simulation