Chaotic biogeography algorithm for size and shape optimization of truss structures with frequency constraints

Authors

  • Shahin Jalili
    Affiliation

    University of Tabriz

  • Yousef Hosseinzadeh
  • Ali Kaveh
    Affiliation

    Iran University of Science and Technology

https://doi.org/10.3311/PPci.7466

Abstract

Size and shape optimization of truss structures with natural frequency constraints is inherently nonlinear dynamic optimization problem with  several local optima. Therefore theoptimization method should be sagacious enough to avoid being trapped in local optima and in this way to reduce premature convergence. To address this problem, we develop a Chaotic Biogeography-Based Optimization (CBBO) algorithm which combines the chaos theory and the biogeography-based optimization (BBO) to achieve an ecient optimization method. In this method, new chaotic migration and mutation operators are proposed to enhance the exploration ability of BBO. The performance of the method is demonstrated through five benchmark design examples with size and shape variables associated by multiply frequency constraints. The results show the eciency and robustness of proposed method and in most cases, CBBO finds a relatively lighter structural weight than those previously reported results in the literature.

Keywords:

Biogeography-based optimization, Chaos, Size and shape optimization, Truss structures

Published Online

2014-11-23

How to Cite

Jalili, S., Hosseinzadeh, Y., Kaveh, A. “Chaotic biogeography algorithm for size and shape optimization of truss structures with frequency constraints”, Periodica Polytechnica Civil Engineering, 58(4), pp. 397–422, 2014. https://doi.org/10.3311/PPci.7466

Issue

Section

Research Article