RIASSUNTO
The paper researches and designs a kind of rubber isolator to reduce the acting force of the power transmission system to the ship hull. And it analyzes the working principle of the propulsion system, and builds 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 coefficients C01 and C10 of the model are obtained by the static characteristic experiment. the paper shows that the basic sizes and parameters of the rubber isolator are decided firstly according to the practical status of the power transmission system, and then the optimum arithmetic is design, in which the variables includes the bolt preload, the sizes of the rubber element, the space between the frontal plate and the back plate and the maximum VON MISES stress of the rubber and metal, and the stiffness of the isolator is treated as target value, and the nonlinear finite element method is applied to numerical simulation. Finally the isolator which has the optimum configuration and meets the demand of use and reducing vibration is made.