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以机床滑动结合面动态特性测试装置关键部件连接桥板的优化设计为例,研究了利用构件之间相对动柔度对机械结构进行优化的理论和方法。首先提出相对动柔度系数概念及其计算方法,并以相对动柔度系数为优化目标,对连接桥板进行优化设计,经过设计后的桥板动刚度远大于被测结合面动刚度,符合设计要求。该方法的提出为同一系统中两个或多个有相对动刚度要求的构件设计提供了一种新设计方法。
Taking the optimization design of the key bridge connecting plate as an example, the theory and method of optimizing the mechanical structure by using the relative dynamic flexibility of the components are studied. Firstly, the concept of relative dynamic flexibility coefficient and its calculation method are put forward, and the relative dynamic flexibility coefficient is taken as the optimization objective to optimize the design of the connecting bridge. The designed dynamic stiffness of the bridge is far greater than the dynamic stiffness of the measured interface, Design requirements. The proposed method provides a new design method for two or more components with relative dynamic stiffness requirements in the same system.