Shape optimization of thin-walled beam-like structures

Citation
P. Vinot et al., Shape optimization of thin-walled beam-like structures, THIN WALL S, 39(7), 2001, pp. 611-630
Citations number
6
Categorie Soggetti
Civil Engineering
Journal title
THIN-WALLED STRUCTURES
ISSN journal
02638231 → ACNP
Volume
39
Issue
7
Year of publication
2001
Pages
611 - 630
Database
ISI
SICI code
0263-8231(200107)39:7<611:SOOTBS>2.0.ZU;2-B
Abstract
This article presents a methodology for optimizing the shape of thin-walled structures having a beam-like dynamic behavior. The equivalent nominal bea m characteristics (quadratic moments of inertia, torsional rigidity, etc.) of a refined finite element model are determined from a direct calculation based on explicit equations which are functions of the nodal coordinates de fining the cross-sectional geometry. A subset of these coordinates is then taken as the design variables for a nonlinear optimization problem where ne w target physical properties are sought. A complementary model reduction pr ocedure is introduced to improve the precision of the proposed method for b eams with variable cross-section or topological accidents. (C) 2001 Elsevie r Science Ltd. All rights reserved.