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《Automobile Technology》 2007-02
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Study on Relationship Between the Geometrical Properties of Body Main Sections and Stiffness of BIW

Xiao Jie1,Lei Yucheng1,Zhang Jian2,Zhang Ping1 (1.Tongji University;2.Shanghai Tongji TJI.Co.Ltd)  
With the stiffness sensitivity analysis being done through the shell element FE model of a BIW,the main sections that can influence the torsion stiffness and the bending stiffness of the BIW remarkably are obtained.On this basis,the influence of the geometrical parameters of these main sections such as area and principal inertia moment on stiffness of BIW is studied.The results show that there is great nonlinear relationship between the main section's geometrical parameters and the stiffness of the BIW,and if the increment of the area and principal inertia moment have positive effect on the stiffness of the BIW is determined by the position of the main sections.
【CateGory Index】: U463.82
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