Journal of Guangdong University of Technology ›› 2010, Vol. 27 ›› Issue (2): 27-31.

• Comprehensive Studies • Previous Articles     Next Articles

Application of Improved Group Search Optimizer in Shape Optimization of Truss Structures

  

  1. Faculty of Civil and Transportation Engineering，Guangdong University ofTechnology ，Guangzhou 510006，China
  • Online:2010-06-25 Published:2010-06-25

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Abstract: Two improved group search optimization algorithms(IGSO)，quick group search optimization(QGSO) and quick group search optimizer with passive congregation(QGSOPC)algorithm，are presented，and they are applied in shape optimization design of truss structures with discrete variables，including planar trusses and spatial trusses．Several numerical examples are given to test the IGSO algorithms．The optimization results are compared with those of the GSO algorithms and some algorithms in reference．The results show that the IGSO algorithmss have better perform ance in term s of convergence than the GSO algorithm and other algorithms，and can find the optimum solution with less iteration．Besides，compared with that of the GSO algorithm ，the IGSO algorithm program statement is much briefer，and easier to be programmed．It is desirable for IGSO to be used for structural optimal design problems．

Key words: Group search optimizer(GSO)；shape optimization；truss；convergence rate；convergence accuracy；discrete variables

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