JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
Development of a Material Mixing Method Based on Evolutionary Structural Optimization
Seog-Young HANSoo-Kyoung LEE
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2005 Volume 48 Issue 3 Pages 132-135


This paper suggests a material mixing method to mix several materials in a structure. This method is based on ESO (Evolutionary Structural Optimization), which has been used to optimize topology of only one material structure. In this study, two criterions for material transformation and element removal are implemented for mixing several materials in a structure. Optimal topology for a multiple material structure can be obtained through repetitive application of the two criterions at each iteration. Two practical design examples of a short cantilever are presented to illustrate validity of the suggested material mixing method. It is found that the suggested method works very well and a multiple material structure has more stiffness than one material structure has under the same mass.

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© 2005 by The Japan Society of Mechanical Engineers
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