水下爆炸作用下船舶结构与燃气轮机动态响应的数值研究

本文对水下爆炸作用下舰船结构及燃气轮机结构冲击响应进行了数值研究.首先,基于CEL方法建立了近自由面水下爆炸流固耦合动力学模型.然后结合燃气轮机-船体一体化仿真分析方法,对不同水下爆炸工况下的舰船结构冲击环境,以及燃气轮机冲击损伤特性进行了评估分析,总结了工况参数对燃气轮机冲击响应特征的影响规律,旨在为舰用燃气轮机抗冲击设计提供技术参考.

Numerical Investigation of Dynamic Responses of Ship Structure and Gas Turbine Subjected to Underwater Explosion

Dynamics responses of the ship structure and the gas turbine subjected to underwater explo-sion are investigated numerically in this paper. Firstly, the underwater explosion numerical model near free surface is established based on the Coupled Eulerian-Lagrangian method. Then, both the shock environment of the ship structure and the dynamics responses of the gas turbine subjected to different underwater explosion loads are simulated by incorporating with the hull-equipment integrative meth-od. Finally, the influences of the underwater explosion condition parameters on the damage response characteristics are analyzed to offer technical reference for the anti-shock design of the gas turbine .