潜射模拟弹筒盖系统柔性支撑受载特性仿真  

Simulation on Load Characteristics of Flexible-Supported Cover System for Underwater-Launched Emulating Missile

作　　者：王汉平[1] 段磊[1] 程栋 余文辉 魏建峰 

机构地区：[1]北京理工大学宇航学院,北京100081 [2]郑州机电工程研究所,郑州450052

出　　处：《宇航学报》2009年第5期1816-1822,共7页Journal of Astronautics

摘　　要：基于无相变VOF模型和动网格技术并采用三维对称模型对潜射模拟弹筒口压力场及其对筒盖系统的影响特性进行了建模仿真,对比分析了筒盖系统的刚性支撑、柔性支撑以及自由铰支等支撑状态的仿真数据,获取了筒口压力场的气泡脉动特性、筒盖及其支撑环节的受载特性和筒盖的运动规律;结果表明柔性支撑只对正压峰期间的筒盖及其支撑环节具有明显的降载效果,而在负压峰期间反而会恶化筒盖及其支撑环节的受载,这与实验结果吻合;自由铰支状态则具有极佳的降载效果。该结果对于指导筒盖系统降载方案的设计和实施具有重要指导意义。The fluid field near canister outlet for underwater-launched emulating missile and its effect on cover system were modeled and simulated using a 3D symmetric model based on dynamic meshing technique and VOF model without phase transformation. Simulating results of rigid-supported cover system, flexible-supported cover system and hinge-supported cover system were compared with each other and analyzed. The characteristics of bubble pulsation near canister outlet, time-variable load over the cover and its supporting component and dynamics characteristics of cover were achieved through simulations. The results showed that, using the flexible-supported cover system, load characteristics over the cover and its supporting component were reduced during the period of positive pressure process, but were increased during the period of negative pressure process. Hinge-supported cover system produced a good result for load-depressing of cover system. It provided a new kind of reference standard for load-depressing cover system design.

关 键 词：潜射发射装置 潜射导弹 筒口压力场 VOF模型 多相流 动网格技术 柔性支撑 

分 类 号：TJ768.2[兵器科学与技术—武器系统与运用工程] TJ762.4