拡張ESO法による構造形態の創生 : 三次元構造への拡張

概要

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Evolutionary Structural Optimization (ESO) method is one of the most powerful and promising techniques for pursuing the optimal structural form among the other methods as the homogenization design technique. Although it is easy to carry out the calculation of ESO, there have been remained some weak points in its evolutionary process, by which inefficiency of calculation is caused or unsatisfactory solutions are concluded. A new method named Extended ESO (XESO) method is proposed through the usage of the contour lines in order to remove such defects of the original ESO method as well as to enable the structures to not only be scraped off but also grow up toward the final optimal structures. In this paper, extension process of the XESO method toward that for 3-dimensional structures is explained and numerical examples are demonstrated so as to show the potential ability of the present method toward effective structural design tools.
2004-02-28