摘要
针对水下爆炸载荷作用下桁架箱体浮筏的冲击环境特性问题,采用数值仿真和声固耦合的方法,利用Abaqus软件进行水下非接触爆炸模拟,对具有双层平台的浮筏的垂向冲击环境分布特性以及减振器的刚度和数量对其垂向冲击环境的影响开展了研究。结果表明:上下平台冲击环境沿纵向分布变化趋势基本一致,沿纵向上冲击环境在位于支柱之间的板架处出现峰值,在两舷侧减振器的缓冲作用下,浮筏迎背爆面冲击环境接近,最大差异仅为11%;浮筏减振器的刚度和数量都会对上下平台的冲击环境造成影响。本文分析结果可为安装在浮筏上的设备抗冲击提供参考。
Aiming at the shock environment characteristics of the truss box floating raft under the action of underwater explosion load,this paper adopts the methods of numerical simulation and acoustic-solid coupling,and uses Abaqus software to simulate the underwater non-contact explosion.The vertical shock environment distribution characteristics of floating rafts with a double-layer platform are studied,as well as the influence of the stiffness and number of shock absorbers on the vertical shock environment.The result shows that the shock environment of the upper and lower platforms have a very similar distribution variation trend along the longitudinal direction,and the shock environment peaks at the plates between the pillars in the longitudinal direction.Under the buffering effect of the shock absorbers on both sides,the shock environment of the blasting side of the floating rafts is close to the one of the side away from explosion,and the gap between them doesn’t exceed 11%.The stiffness and quantity of the shock absorbers of the floating raft can affect the shock environment of the upper and lower platforms.The analysis results can provide a reference for the impact resistance of the equipment installed on the floating raft.
作者
宋世凯
和卫平
王军
郭君
SONG Shikai;HE Weiping;WANG Jun;GUO Jun(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Wuhan Second Ship Design and Research Institute,Wuhan 430205,China)
出处
《应用科技》
CAS
2022年第3期19-25,共7页
Applied Science and Technology
基金
国家科技重大专项项目(2017-V-0002-0051)。
关键词
桁架箱体浮筏
冲击环境
水下爆炸
减振器
声固耦合
分布特性
迎背爆面
刚度
truss box floating raft
shock environment
underwater explosion
shock absorber
acoustic-solid coupling
distribution characteristics
the front and the back blasting side
stiffness
