Research On Rubber Mount Of Engine Based On Finite Element Analysis

Along with the advance of human society and the technology development of automotive industry, the request of the comfort is more and more high.Vibrations generated by the engine of a vehicle’s main vibration source, are not only affects the car’s ride and comfort, will seriously affect the life of the vehicle structure.Engine is fixed on frame of the vehicle by the rubbermount, the rubber mount for vibration dampingabilities between the engine and the frame plays an important role.Analysis engine rubber mount characteristics, especially the dynamic characteristics, to reduce vehicle vibration levels and improve vehicle ride comfort becomes more and more important.This paper, on the basis of nonlinear analysis of structure of front rubber mount, rear rubber mount.donethe nonlinear finite element simulation and experimental research, and optimized the front rubber mount and rear rubber mount. Firstly, research the nonlinear problem of rubber suspended, nonlinear problem of finite element software ANSYS Workbench simulation,how to accelerate model convergence method, in a simulation of a rubber material selection constitutive model and get the model parameters. Then, using three-dimensional modeling software CATIA establish rubber suspension of CAD model, make CAD model into finite element software ANSYS Workbench. Built on the basis of the finite element model of the front and rear rubber mount analysis and calculation, and the front rubber mount shear dynamic stiffness test, the test results and simulation results were verified by comparing the results of the finite element model and simulation accuracy built. Finally, based on the requirements for vehicle vibration engine mount system, transmissibility curve and stress analysis results optimizated the front and rear rubber engine mount.