A strength-based multiple cutout optimization in composite plates using fixed grid finite element method

Liu, Yi, Jin, Feng, and Li, Qing (2006) A strength-based multiple cutout optimization in composite plates using fixed grid finite element method. Composite Structures, 73 (4). pp. 403-412.

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DOI: 10.1016/j.compstruct.2005.02.014

View at Publisher Website: http://dx.doi.org/10.1016/j.compstruct.2...

Abstract

The design of interior cutouts in laminated composite panels is of great importance in aerospace, automobile and structural engineering. Based on the Tsai–Hill failure criterion of the first ply, this paper presents a newly developed Fixed (FG) Grid Evolutionary Structural Optimization (ESO) method to explore shape optimization of multiple cutouts in composite structures. Different design cases with varying number of cutouts, ply orientations and lay-up configurations are taken into account in this study. The examples demonstrate that the optimal boundaries produced by FG ESO are much smoother than those by traditional ESO. The results show the remarkable effects of different opening numbers and various lay-up configurations on resulting optimal shapes. The paper also provides an in-depth observation in the interactive influence of the adjacent cutouts on the optimal shapes.


Item ID:	4102
Item Type:	Article (Research - C1)
ISSN:	1879-1085
Keywords:	evolutionary structureal optimization; finite element method; fixed grid; laminated composites; multiple cutouts; shape optimization
Date Deposited:	28 Sep 2009 05:00
SEO Codes:	87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870302 Metals (e.g. Composites, Coatings, Bonding) @ 50% 86 MANUFACTURING > 8613 Transport Equipment > 861301 Aerospace Equipment @ 30% 87 CONSTRUCTION > 8799 Other Construction > 879999 Construction not elsewhere classified @ 20%
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