Indexed on: 25 Jan '19Published on: 24 Jan '19Published in: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Combined with the finite element analysis (FEA) technology of fluid–structure interaction and nonlinear large deformation material, the integral FE models of a type of hydraulically damped rubber mount (HDM) with resonant column channel are set up. Based on the visualized simulation results, the working process of the HDMs is analysed, and the dynamic stiffness and the loss angles are compared. The calculation results show that the variation of the dynamic stiffness and the loss angle in the low-frequency domain is related to the flux and its hysteresis in the column channel. The effects of the decoupling membranes and the disturbing plate on the low-frequency dynamic characteristics are investigated by calculations. Results show that the setting of the decoupling membranes and their stiffness greatly change the dynamic stiffness and the loss angle of the HDM in the frequency domain below 50 Hz. And the disturbing plate and the variation of its diameter also affect the dynamic characteristics in the same frequency range. The accuracy of the FEA calculation is verified by the experiment.