斜支承系统关键件的跌落破损评价

建立考虑关键件的斜支承系统模型，基于系统跌落冲击动力学方程，利用四阶Runge-Kutta法，以系统参数、跌落冲击初始速度、支承角或频率比或系统阻尼比作为三个基本参量，获得关键件跌落破损边界，探讨支承角、频率比、系统阻尼比等对关键件跌落破损边界的影响规律。评价结果显示：较小的支承角或较大的频率比有利于扩大系统关键件的未损坏区；系统阻尼比存在最优值，恰当地选择阻尼比可改善斜支承系统的抗跌落冲击性；为使斜支承系统获得理想的减振和抗跌落冲击性能，需综合考虑内装物主体等效刚度系数、弹簧原长等参数。

Dropping Damage Evaluation for Critical Components of Tilted Support Systems

Dimensionless dropping shock dynamic equations of tilted support spring system with critical components were established and solved by adapting Runge-Kutta method. The system parameter, dropping shock initial velocity and the angle or the frequency ratio or the damping ratio were regarded as basic parameters and dropping damage boundary of critical components was obtained. Based on the numerical results, it demonstrates that decreasing the angle or increasing the frequency ratio can be contributed to expending the safe zone of critical components; the optimal damping ratio of the system exists and it is important to choose reasonably the damping ratio of the system for improving dropping shock resistance characteristics for tilted support spring system; vibration reduction and dropping shock resistance characteristics of the system can be obtained by considering comprehensively the stiffness coefficient of the product, the original length and relevant parameters.