Title: Analysis of low frequency response characteristics of multi-inertia channel hydraulic mounts

Authors: Zhihong Lin

Addresses: School of Mechanical and Electrical Engineering, Sanming University, Sanming Fujian, 365004, China

Abstract: This paper investigates the effects of the number and length of inertia channels and different cross-sectional areas on the low-frequency characteristics of hydraulic mounts. Firstly, it analyses the isolation of low frequency-large amplitude excitation hydraulic mounts relying mainly on inertial channels. Secondly, nine different structures of inertia channels are proposed and the mathematical model of hydraulic mounts is obtained using an equivalent mechanical method. Finally, the hydraulic mounts system model of the 1/4 vehicle model is built to analyse the effect of different inertia channels on the mounts' vibration isolation performance under road excitation. It has been shown that changing the number of inertia channels as well as the cross-sectional area can regulate the peak and peak frequency of the dynamic stiffness and loss angle of the hydraulic mounts.

Keywords: hydraulic mounts; inertia channel; equivalent mechanical; 1/4 vehicle model; dynamic stiffness; loss angle.

DOI: 10.1504/IJVSMT.2023.132937

International Journal of Vehicle Systems Modelling and Testing, 2023 Vol.17 No.2, pp.143 - 163

Accepted: 25 Feb 2023
Published online: 20 Aug 2023 *