Integrated Design of Materials and Structures with Scale-Coupled Effect

Abstract:

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It is well known that structural behaviors of composite solids are determined by topology of microstructures of different sizes. In this paper a concurrent topology optimization method for integrated design of materials and structures with periodical microstructure was presented. The microstructures were assumed to be uniform in macro scale and heterogeneous in micro scale and the optimization object was to minimize the material global compliances. Design variables for structure and material microstructures were defined, independently. SIMP (Solid Isotropic Material with Penalization) was adopted to ensure clear topologies in both macro and micro scales. Design variables for structure and material microstructures were integrated into one system by using the super-element method. Influences of Representative Volume Element sizes, material ratio of macro-scale and micro-scale on structural topology are investigated. Numerical experiments validate the proposed method which can be used as an innovative design concept for the lightweight structures.

Info:

Periodical:

Advanced Materials Research (Volumes 199-200)

Edited by:

Jianmin Zeng, Zhengyi Jiang, Taosen Li, Daoguo Yang and Yun-Hae Kim

Pages:

1292-1296

DOI:

10.4028/www.scientific.net/AMR.199-200.1292

Citation:

Y. D. Liu and Y. H. Yin, "Integrated Design of Materials and Structures with Scale-Coupled Effect", Advanced Materials Research, Vols. 199-200, pp. 1292-1296, 2011

Online since:

February 2011

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Price:

$35.00

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