Analysis And Optimal Design On Engine Rubber Suspension By ADAMS

The operation of the engine is one of important elements to cause vehiclevibration.The vibration caused by engine will transmit to vehicle body. At the sametime due to vehicle frame vibration will cause noise radiation and then reaction tovehicle body by rubber suspension system. To effectively separate the vehiclevibration and the noise in the vehicle, designers must have proper and good design forsuspension system, which certainly effectively improve the stability. So it is verysignificant to analyze and optimally design.In this article, some engine as the object of the research, build a mathematicalmodel for the rubber suspension system of this engine, and also do optimal analysison the performance. The main research content is as below:(1) An engine model is built that it is applicable to calculate the decouplingdynamics of rigid-deformable body of corresponding engines rubber suspensionsystem and it is established in the condition that by taking the total engine power as arigid body, by applying the bush in ADAMS to describe rubber suspension system,based on the related actual data supplier provided. This model is used for calculatingand analyzing the system characteristics such as rigid frequency, mode of vibration,energy distribution and so on.(2) To analyze the suspension system is based on design request of actualproduction and related rigid-deformable calculation theories, and the objectivefunction is the highest decoupling rate which is along the Z direction and circling Xaxis, the constraint condition is reasonable rigidity and frequency, the variable is therigidity figures in three directions of four suspension components. And then based onoptimal results the researcher does detailed comparative analysis respectively onsystem characteristics, the isolation rate, displacement response, frequency response,speed response. Finally, the article will do robustness analysis with the method ofMonte Carlo to put the research results into practice.(3) In this article the researcher optimized the shape of suspension based the bestrigidity and damp of rubber suspension which optimally analyzed in ADAMS. Cuboidare adopted to simulate the suspension components, through the way of punch, theDOE test analysis method, through carries on the contrastive analysis of the stress anddisplacement response, get suspension components ultimately shape optimization.