| For SUV (Sports Utility Vehicle) has a lot of virtues, such as fashion, sports, utility and so on, it is a kind of fashionable vehicle suited to the young in China. But now CAE(Computer Aided Engineering) of a majority of SUV made in our country is still poor. So it is necessary to improved the static and dynamic property through changing the structure of SUV by CAE.In the development of modern automobiles, CAE is an essential means to study the static and dynamic property. It plays a more and more important role in the automobile reseach and development. Since CAE is one of the core techniques in the automobile reseach and development,it is very important to automobile industry of our country.This paper is originated from the Project "CAE of SUV of Beijing *** Automobile Company". The main contents include:1) The creation of the detail finite element model of the SUV structure by Hypermesh software. It includes importing CAD model of SUV into Hypermesh software, selecting element types, creating the whole vehicle mesh, assigning element property and material property, and examining the finite element model.2) The static analysis of the SUV structure by Natran software. It includes rigidity analysis, which includes torsional rigidity analysis and flexural rigidity analysis, and intensity analysis under five load cases such as torsion, flexure, hanging, brake and turning. Through the rigidity analysis, the SUV'rigidity is improved and reaches the rigidity of the similar vehicle of FORD. Through the intensity analysis, high stress areas have been found and the SUV structure is optimized.3) The dynamic response analysis of the SUV structure in use of Natran software and Adams software. The plot(σ-t) of the SUV's floor is obtained. It can give direct advice on the experimental study of SUV. The plot shows that the σ value of SUV is low. From the viewpoint of dynamics, Although the a value in some location is high, it hasn't any effects on the SUV structure. |
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