Nowadays, vehicle lightweight design is a main topic in automotive industry. Crashworthiness, which is the most important performance of a full vehicle, must be always satisfied in the study on body lightweight design. This paper presents research, from the point of view of safety, of structural lightweight design of the front side rail of a passenger car. The response surface method is used to create mathematical models that represent the relationship between structural sheet thicknesses and absorbed energy of the entire structure in the frontal crash simulation, and the relationship between structural sheet thicknesses and the mass of the entire structure. Then an optimization process is performed, and the structural mass and original absorbed energy are defined as objective and constraint functions, respectively. Minimum mass and structural sheet thicknesses are obtained with the satisfaction of original absorbed energy of the front side rail structure. The weight reduction of the front side rail is 26.95%.
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Study on Structural Lightweight Design of Automotive Front Side Rail Based on Response Surface Method
Y. Zhang,
Y. Zhang
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
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P. Zhu,
P. Zhu
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
Search for other works by this author on:
G. L. Chen,
G. L. Chen
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
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Z. Q. Lin
Z. Q. Lin
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
Search for other works by this author on:
Y. Zhang
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
P. Zhu
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
G. L. Chen
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, China
Z. Q. Lin
School of Mechanical Engineering,
Shanghai Jiao Tong University
, 800 Dongchuan Road, Min Hang, Shanghai 200240, ChinaJ. Mech. Des. May 2007, 129(5): 553-557 (5 pages)
Published Online: June 9, 2006
Article history
Received:
December 14, 2005
Revised:
June 9, 2006
Citation
Zhang, Y., Zhu, P., Chen, G. L., and Lin, Z. Q. (June 9, 2006). "Study on Structural Lightweight Design of Automotive Front Side Rail Based on Response Surface Method." ASME. J. Mech. Des. May 2007; 129(5): 553–557. https://doi.org/10.1115/1.2712223
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