柔性拦截网动力学建模及仿真

Dynamic Modeling and Simulation on Flexible Intercepting Net

针对一定航向区域的鱼雷攻击,采用柔性拦截网往往能够达到良好的拦截效果。文中基于集中质量法对拦截网网衣进行了离散,将网衣分为由无质量虚拟弹簧连接的端节点和中间节点,在此基础上根据牛顿第二定律建立了离散节点的控制方程,继而推导建立了端节点、中间节点及浮体结构的动力学微分方程,给出了简化求解网衣形变的网目群化算法及浮式结构网动力学方程数值求解方法,并通过动力学仿真对模型进行了合理性验证,文中研究可为采用柔性拦截网拦截鱼雷提供理论参考。

For torpedo attack in a certain course area,the flexible intercepting net can achieve good interception effect.In this paper,the net is discretized based on the lumped mass method,and the intercepting net is divided into end nodesand intermediate nodes,which are connected with massless virtual spring.Following the Newton's second law,the governingequations of the discrete nodes are established,then the dynamic differential equation of the end node,the intermediatenode and the floating body is established.The mesh group algorithm and the numerical method for solving thedynamic equation of the floating structure net are given for simplified solution to net deformation.The rationality of themodel is verified by dynamic simulation.This research may provide a theoretical reference for intercepting torpedo withflexible intercepting net.