The Two-Level Method and its Application in Dynamic Optimization of a Truss

Abstract:

A two-level method is presented to improve dynamic characteristic of a truss and let it out of the resonance region. The does is as follow: selected the desired design variable by sensitivity analysis, used the optimum solution of the subproblem approximation method as initial solution of the simplex method, and improved the simplex method by introducing golden section method. While ensuring requirement of strength, stiffness and stability, the two-level method makes the truss less weight and avoids the resonance region. The improved simplex method searches the better point further by introducing golden section method on the path of the extending principle and the shrinking principle and reduces searching times.

• Periodical: Advanced Materials Research (Volumes 816-817)
• Pages: 800-805
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.816-817.800
• Online since: September 2013
• Authors: Cheng Liang Zhang, Guang Yang, Zhi Qiang Tong
• Keywords: First-Order Natural Frequency, Golden Section Method, Improved Simplex Method, Subproblem Approximation Method, Truss

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