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International Journal of Automotive Technology > Volume 21(2); 2020 > Article
International Journal of Automotive Technology 2020;21(2): 503-512.
doi: https://doi.org/10.1007/s12239-020-0047-2
SHAPE OPTIMIZATION OF THIN-WALLED CROSS SECTION FOR AUTOMOBILE BODY CONSIDERING STAMPING COST, MANUFACTURABILITY AND STRUCTURAL STIFFNESS
Yanhua Ma, Rui Chen, Jiantao Bai, Wenjie Zuo
Jilin University
PDF Links Corresponding Author.  Wenjie Zuo , Email. zuowenjie@jlu.edu.cn
ABSTRACT
At the conceptual design stage, the cross-sectional shapes of thin-walled beams (TWBs) need to be optimized to improve the performance of automobile structure. Therefore, this paper innovatively proposes a cross-sectional shape optimization method to acquire a low cost, high stiffness, manufacturable and lightweight TWB. Meanwhile, the stamping cost of thin-walled beams is analytically derived. The cross-sectional area is taken as the objective function to establish an optimization formulation with multiple constraints such as cross-sectional stiffness, manufacturability and cost of TWBs. The single-objective genetic algorithm based on non-dominant principle is introduced to solve the problem. The effectiveness of the proposed method is verified by an example of double cell cross-sectional shape.
Key Words: Cross-sectional shape optimization, Thin-walled beam, Stamping cost, Manufacturability, Structural stiffness
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