摘要
对于长径比较高的助推器来说,为了提高与芯级的连接可靠性,可采用超静定捆绑连接方式。这种捆绑连接方式增加了助推器动力学响应分析的难度。以超静定捆绑火箭助推器为研究对象,通过引入拉压双线性弹簧模拟捆绑连接装置,建立合理的动力学分析模型,对系统进行数值求解,获得径向冲击作用下助推器的动力学响应特性。通过与静定捆绑模型的对比,获得超静定捆绑助推器的广义位移、频谱和内力的响应,从而为工程应用提供一定的参考和理论支撑。
In order to increase the connect reliability between the core stage and the boosters of the launch vehicle,the boosters with large fineness ratio can use hyper-static strap-on style. However,it may increase the analysis difficulty of the dynamic characters. Therefore,the dynamic model of booster with hyper-static strap-on style was established,and the bi-linear stiffness spring was employed to simulate the strap-on equipment.The dynamic response of the booster by the radial impulsion will be researched. The responses,including generalized displacements,frequency and the internal force will be compared with the static strap-on style. Research results can provide reference and theoretical support for the engineering application.
作者
冯韶伟
王月
陈晓飞
郭凤明
冷月
FENG Shaowei;WANG Yue;CHEN Xiaofei;GUO Fengming;LENG Yue(Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China;Research and Development Center of China Academy of Launch Vehicle Technology, Beijing 100076, China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2018年第2期55-59,共5页
Journal of National University of Defense Technology
基金
中国科协青年人才托举工程资助项目(YESS20170051)
关键词
超静定捆绑
动力学响应
拉压不同刚度
机理模型
hyper-static strap-on style
dynamic response
different tensile and compressive stiffness
mechanism model
