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International Journal of Automotive Technology > Volume 10(3); 2009 > Article
International Journal of Automotive Technology 2009;10(3): 355-363.
THEORETICAL METHOD FOR PREDICTING THE WEIGHT REDUCTION RATE OF A BOX-TYPE CAR BODY FOR ROLLING STOCK BY MATERIAL SUBSTITUTION DESIGN
J. S. KOO, H. J. CHO
Seoul national university of Technology
ABSTRACT
In this paper, a theoretical approach is suggested for predicting the structural performances and weight reduction rate of a car body with a box-type section when its material is substituted with a lightweight material for weight saving. For the material substitution design of a car body for rolling stock, bending, axial, and twisting deformations should be considered at constant stiffness and strength conditions. To compare the weight reduction effects on different material applications, some new indices were derived from a structural performance point of view. The derived indices provide good measures to estimate weight reduction by material substitution design and can be effectively applied to the conceptual design of a car body.
Key Words: Lightweight materials, Material substitution, Weight reduction, Conceptual design, Box-type section, Bodyshell
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