Deep Study and Improvement of the Globally Convergent Version of MMA

Abstract:

The globally convergent version of MMA (GCMMA) is deeply studied in this paper. Based on 3-bar truss structures, the advantages and disadvantages of the rules for updating the parameters are analyzed. The factor that makes convergence rate slow is found. Then the improvement measure by using two points approximate optimization for reference is put forward to speed up convergence rate. Finally by application on structural optimization of a truss, improved GCMMA can converge to the global optimal solution. Meanwhile, the convergent rate of improved GCMMA is significantly faster than GCMMA.

• Periodical: Applied Mechanics and Materials (Volumes 635-637)
• Pages: 1666-1670
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.635-637.1666
• Online since: September 2014
• Authors: Li Hua Guo*, Wen Cheng Tang
• Keywords: Conservative Factor, Globally Convergent Version of MMA (GCMMA), Truss Structural Optimization, Two Points Approximate Optimization

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