Dynamic and Structural Analysis of Hydro-Pneumatic Suspension System for Wheeled Heavy Vehicle
Date Issued
2015
Date
2015
Author(s)
Chen, Ying-Ting
Abstract
This thesis studies the dynamic and structural analysis of the hydro-pneumatic suspension of the wheeled heavy vehicle, and discussion on the performance of the new hydro-pneumatic shock absorber and the structural strength and rigidity of new design components of the suspension. From literature review, this study summarizes conventional methods in research of the suspension system, and chooses suitable simulation methods for research. In addition to the rigid body model commonly used in the literature, this study creates a flexible body model that is closer to real suspension components to obtain more realistic results, and discusses on the differences in the results between rigid body model and flexible body model. This thesis uses finite element software: Abaqus to create rigid body model simulation analysis, and uses multi-body dynamic software: ADAMS to do the same simulation, and compare results between Abaqus and ADAMS. Finally, this study uses Abaqus to create the flexible body model to obtain more realistic results. The simulation results show that dynamic results between Abaqus and ADAMS are consistent, and it means the rigid model and its results are reasonable. From results of the flexible body model, it shows the newly designed hydro-pneumatic shock absorber doesn’t meet requirements. And the structural strength and rigidity of new design components of the suspension are enough. Finally, by comparing the results between rigid body model and flexible body model, this thesis presents a more efficient method of dynamic and structural analysis, and uses this method to simulate suspension responses with different parameters to provide the basis for improving performances of the shock absorber.
Subjects
hydro-pneumatic suspension
dynamic analysis
structural analysis
finite element
rigid body
flexible body
Type
thesis
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