Vibration study of a vehicle suspension assembly with the finite element method

[摘要] The main steps of the present work represent a methodology of analysing various vibration effects over suspension mechanical parts of a vehicle. A McPherson type suspension from an existing vehicle was created using CAD software. Using the CAD model as input, a finite element model of the suspension assembly was developed. Abaqus finite element analysis software was used to pre-process, solve, and post-process the results. Geometric nonlinearities are included in the model. Severe sources of nonlinearities such us friction and contact are also included in the model. The McPherson spring is modelled as linear spring. The analysis include several steps: preload, modal analysis, the reduction of the model to 200 generalized coordinates, a deterministic external excitation, a random excitation that comes from different types of roads. The vibration data used as an input for the simulation were previously obtained by experimental means. Mathematical expressions used for the simulation were also presented in the paper.

[发布机构] University of Craiova, Faculty of Mechanics, Romania^1;Caelynx Europe, Romania^2

[效力级别] 运输工程 [学科分类] 工业工程学

[关键词] External excitation;Finite element analysis software;Generalized coordinates;Geometric non-linearity;Mathematical expressions;Random excitations;Vibration effect;Vibration studies