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Proceedings Paper

Automobile body continuous-variable-based discrete thickness optimization for maximizing natural frequency
Author(s): Henry Panganiban; Gang Won Jang; Tae Jin Chung; Young Min Choi
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Paper Abstract

Thickness optimization of an automobile body is presented. The thicknesses of plates making-up the monocoque body of an automobile are employed as design variables for optimization and the objective is to increase the first torsional and bending natural frequencies. By allotting one design variable to each plate of the body, compared to previous works based on element-wise design variables, design space of optimization was reduced to a large extent. Considering manufacturability of the optimized thicknesses, a straightforward thickness discretization scheme considering design sensitivities and employing a subsequent reduced optimization problem is formulated. With the optimized thicknesses, the car body maintained its weight with around 6 Hz frequency increase compared to the initial design.

Paper Details

Date Published: 9 January 2008
PDF: 6 pages
Proc. SPIE 6794, ICMIT 2007: Mechatronics, MEMS, and Smart Materials, 679435 (9 January 2008); doi: 10.1117/12.783778
Show Author Affiliations
Henry Panganiban, Kunsan National Univ. (South Korea)
Gang Won Jang, Kunsan National Univ. (South Korea)
Tae Jin Chung, Kunsan National Univ. (South Korea)
Young Min Choi, SDB Bellows Co., Ltd. (South Korea)

Published in SPIE Proceedings Vol. 6794:
ICMIT 2007: Mechatronics, MEMS, and Smart Materials
Minoru Sasaki; Gisang Choi Sang; Zushu Li; Ryojun Ikeura; Hyungki Kim; Fangzheng Xue, Editor(s)

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