Concurrent Subspace Complex Coordination Optimization Method for Structural Layout Synthetical Optimization Problem

Abstract

The shortcomings of the concurrent subspace collaborative optimization (CSCO) method for structural layout synthetical optimization problem have been analyzed in the current paper. Based on the complex method principle and the special form of structural layout synthetical optimization problem, a new system-level coordination strategy has been proposed to overcome these defects and improve the CSCO method. The computational stability of the CSCO method has been improved by this strategy. For the sake of distinction, the improved method is called the concurrent subspace complex coordination (CSCC) optimization method. Two examples, including a 25-bar truss structure and a composite stiffened panel structure, have been conducted to demonstrate the effectiveness and reliability of the CSCC optimization method.