一种用于动力传动系统的橡胶隔振器优化设计研究

摘要

研究并设计一种橡胶隔振器,以减弱动力传动系统对船体的作用力.分析系统的工作原理,建立系统的动力学分析模型,得到系统的初始参数.氯丁橡胶的材料特性用Mooney-Rivlin模型描述,模型的系数C01和C10由橡胶材料的静态特性试验得到.根据动力传动系统的实际状态,设计隔振器的基本尺寸、基本参数,在此基础上,设计优化算法,其中,变量是螺栓预紧力、橡胶元件的尺寸、连接板之间的距离、橡胶和金属材料的最大VON MISES应力,目标函数是隔振器的刚度,数值仿真计算采用的是非线性有限元法,最后确定了满足隔振和使用要求、结构形式最优的隔振器.%Design a kind of rubber isolator to reduce the force which is from the power transmission system acting on the ship. Analyze the system working principle, and build the dynamics analysis model to obtain the initial parameters of the power transmission system. The characteristics of the neoprene are described by the Mooney-Rivlin model, and the coeffi-cients C01 and C10 of the model are obtained by fitting the experimetal data of stress and strain. On the basis of practical working status of the power transmission system, the fundmental configuration and sizes are decided firstly, and then design the optimum arithmetic, in which the variables includes the bolt preload , the sizes of the rubber elememt, the space from the frontal plate to the back plate and the maximum VON MISES stress for rubber and metal, and the stiffness of the isolator is treated as target value, and the nonlinear finite element method is used for numerical simulation. As a result, the isolator is made, and it has the optimum configuration and is fit for the demand of use and reducing vibration.