弹性垫形式的水下弹性体发射动力学分析

摘要

弹性垫会对水下运载器发射动力学产生影响,文章针对弹性垫形式,利用Lagrange方程推导了新型适配关系下的发射动力学方程,同时考虑了运载器的刚体运动、弹性变形、弹性垫变形与接触对发射过程的影响.利用文中的方法,建立了水下运载器发射动力学模型,对发射过程的载荷进行了求解,研究了弹性垫数量、刚度、位置等参数对运载器弹性振动的影响.结果表明文中方法是有效的,可用于水下运载器发射动力学分析.%The elastic cushion design has important impact on the launching dynamics of the underwater flexible vehicle. In this paper, the launching dynamic equation of new adaptation pattern is derived for the elastic cushion launching system by using Lagrange's equations, in which the impact of the rigid-body mo-tion, elastic deformation, deformation and contact of elastic cushion on the launching dynamics are consid-ered. The presented method is used to create the the launching dynamic model, and analyse the dynamic response of structural load, study the impact of the design parameter of elastic cushion on the launched flex-ible vihicle. The results show that the presented method is effective in the launching dynamic analysis of the underwater flexible vehicle.