Modal Analysis of Automotive Steering System Based on Finite Element Method

Abstract

In order to understand the vibration characteristics of the steering system and provide suggestions for improvement, a model of the steering system was created based on finite element method (FEM). Also, the modal analysis of the steering system was presented, and the first twenty step modes were calculated and analyzed. The steering system was also evaluated from the resonance point of view. The result shows that the frequency of the first step mode is 31.578 Hz which is higher than the exciting frequency of the engine; also, the road roughness excitation frequency has a minor influence on steering wheel vibration.

Theoretical and Experimental Vibration Analyses of the Steering Wheel of a Heavy Commercial Vehicle

“…Chen et al 14 created a model of a steering system based on the finite element method (FEM) to understand the vibration characteristics of the system. Twenty step modes of the system were calculated and analyzed by modal analysis.…”

Experimental Modal Analysis of Vehicle Body in White

“…Silva, et al presented the determination of the mode shapes of a tubular structure chassis using finite element method [3]. Chen, et al performed the modal analysis of automotive steering system based on FEM [4]. Popprath, et al dealt with the investigation of an approximately 1/10-scaled model of a metro vehicle car body concerning the low structural eigenmodes.…”