中文摘要：

针对某高速凸轮轴磨床主轴砂轮架系统，在多体动力学软件ADAMS中建立其柔性体模型，并对其进行动力学仿真，对比刚体模型和柔性体模型中砂轮质心的位移变化。建立径向基函数近似模型，从而对主轴砂轮架系统进行结构分析，在此基础上利用遗传算法对关键参数进行优化，对比优化前后的主轴砂轮架系统的性能，结果表明采用该方法提高了优化设计的精度和求解复杂有限元模型优化问题的效率，并且使用柔性体进行系统动力学仿真更能反映出主轴砂轮架系统工作状态下的变形和受力情况。

英文摘要：

As for the spindle--carriage system of high speed grinder, kinematical analysis model of flexible body was created and simulated by ADAMS. We compared the movement of grinding wheel＇ s center of mass in the flexible model with that in the rigid model. Radial basis function model was built for the real time structural analysis and the key parameters were optimized by genetic algo-rithms. The results show that the proposed method can improve the precision of optimization design and the computing efficiency of complex FEM optimization,and the kinematical simulation of flexible body can reflect the transmutation and stress of spindle-carriage system at work.