Abstract
This paper combine improved genetic algorithm with bi-directional evolutionary structural optimization algorithm to optimize structure in dual coding way. The new algorithm not only has solved the genetic algorithm (GA) problem which is easy to appear premature, but also has solved the bi-directional evolutionary structural optimization algorithm (BESO) problem which is easy to get a local optimal solution. In order to satisfy the constraints of the periodic structure, the design area is divided into the form of unit cells, and optimize the representative unit cell, other cells content repeat constraints. This paper optimize the typical periodic structure with the new method of topology optimization, and the optimization results show that the presented method is reliability and validity.
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