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为有效简化大型整流罩分离过程的数值分析工作,采用柔性多体动力学分析软件———ADAMS/Flex对大型整流罩结构进行了有限元建模简化技术研究,并在离散化简化模型的有效性验证基础上探讨了大型整流罩分离过程中质心运动、罩内可用空间包络及铰链力的变化规律;同时,对比分析了分离面解锁前因弹簧作用导致的整流罩初始装配弹性变形对整流罩分离动力学行为的影响。结果表明,给出的大型薄壁加筋整流罩结构的简化建模方法合理可行,可作为整流罩简化建模基本依据;忽略初始弹性变形的抛罩动力学分析可用作整流罩分离运动规律研究的基准工况;整流罩分离过程中的“呼吸运动”对柱段角点处影响最为严重,而越靠近罩体顶端其影响越小。
In order to effectively simplify the numerical analysis of the large-scale fairing separation process, the simplified multi-body modeling technique of large fairing was studied by ADAMS / Flex flexible multi-body dynamic analysis software, and the simplified model was simplified by discretization In the meantime, the variation of the center of mass motion, the available space envelope and the hinge force in the process of separation of the large fairing was discussed. At the same time, the initial assembly elastic deformation of the fairing caused by the spring before the release surface was analyzed. Effect of cover separation kinetic behavior. The results show that the simplified modeling method of the large-scale thin-walled reinforced cowl fairing is reasonable and feasible and can be used as the basic basis for the simplified modeling of the fairing. The throwing dynamics analysis ignoring the initial elastic deformation can be used as the fairing The baseline conditions of the study; the “breathing motion” during the course of the cowl separation has the most serious impact on the corner of the column, and the closer it gets to the top of the shell, the less impact it has.