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International Journal of Automotive Technology > Volume 3(3); 2002 > Article
International Journal of Automotive Technology 2002;3(3): 117-122.
NUMERICAL APPROXIMATION OF VEHICLE JOINT STIFFNESS BY USING RESPONSE SURFACE METHOD
S. B. LEE1, J. R. PARK2, H. J. YIM1
1Kookmin University
2Hanyang University
ABSTRACT
Joint stiffness can affect the vibration characteristics of car body structures. Therefore, it should be included in vehicle system model. In this paper, a numerical approximation of joint stiffness is presented considering joint flexibility of thin walled beam-jointed structures. Using the proposed method, it is possible to optimize joint structures considering the change of section shapes in vehicle structures. The numerical approximation of joint stiffness is derived using the response surface method in terms of beam section properties. The study shows that joint stiffnesses can be effectively determined in designing vehicle structures.
Key Words: Joint stiffness, Optimal design, Response surface method, Section property, Vehicle structure
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