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A TWO-LEVEL DECOMPOSITION METHOD FOR SHAPE OPTIMIZATION OF STRUCTURES

โœ Scribed by XICHENG WANG; D. KENNEDY; F. W. WILLIAMS

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
261 KB
Volume
40
Category
Article
ISSN
0029-5981

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โœฆ Synopsis

The paper proposes a two-level decomposition method for shape optimization of structures. The optimization problem is divided into two subproblems on the basis of the different effects on structural behaviour of different kinds of design variables. A minimum mass subproblem is solved to determine the sizing variables and a constraint evaluation function based on norm optimization is minimized to determine the shape variables. An efficient coupling technique is used between the subproblems to ensure very rapid and steady convergence. Numerical results are presented to demonstrate the effectiveness of the method.

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