薄壁圆柱壳体结构在非对称周向载荷下响应分析

Response analysis of thin-walled cylindrical shell structure under asymmetrical circumferential load

为研究薄壁圆柱壳体结构动态响应对水下航行体运动轨迹的影响,本文从水下航行体出筒过程的动力学特性出发,提出了2种仿真计算模型。通过对比薄壁圆柱壳体结构在非对称周向载荷作用下的动力学响应可以发现,二维仿真模型仅描述了筒体形心挠度位移的变化,而三维模型不仅可以考虑非对称载荷,也可以考虑筒内周向的均布压力载荷,三维仿真结果可以更加准确地预示壳体的局部变形模式。本文研究结果对后续水下航行体出筒动力学特性仿真研究具有指导意义。

In order to study the influence of the thin-walled cylindrical shell on the motion trajectory of the submarine launched vehicle,two simulation calculation models are proposed based on the dynamic characteristics models based on the submarine launched vehicle in the process of out of cylinder.Through comparison,it can be found that the two-dimensional model only describes the change of the cylinder centroid displacement,while the three-dimensional model can not only consider the asymmetric load,but also the circumferentially symmetric gas pressure.The three-dimensional simulation result can more accurately predict the deformation.The research of this paper have guiding significance for the subsequent simulation on the dynamic characteristics of the submarine launched vehicle.