Optimization of composite sandwich cylinders for underwater vehicle application

被引：59

作者：

Lee, Gyeong-Chan ^{[1
]}

Kweon, Jin-Hwe ^{[1
]}

Choi, Jin-Ho ^{[2
]}

机构：

[1] Gyeongsang Natl Univ, Dept Aerosp Engn, Res Ctr Aircraft Parts Technol, Jinju 660701, Gyeognam, South Korea

[2] Gyeongsang Natl Univ, Sch Mech Engn, Res Ctr Aircraft Parts Technol, Jinju 660701, Gyeognam, South Korea

来源：

COMPOSITE STRUCTURES | 2013年 / 96卷

基金：

新加坡国家研究基金会;

关键词：

Sandwich; Composite cylinders; Optimization; Microgenetic algorithm; PRESSURE;

D O I：

10.1016/j.compstruct.2012.08.055

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This study aims to use optimization to increase the design load of composite sandwich cylinders under external hydrostatic pressure. Unlike other studies that only consider buckling, this study took into account both buckling and material failure. MSC.NASTRAN was used for the finite element analysis, while a micro-genetic algorithm was used for the optimization. The finite element model was validated by comparison with the experiment results, and the result of the optimization using the finite element method was validated by comparison with the result of the feasible region analysis. Based on the optimization, as the thickness of the sandwich increases, the buckling load becomes larger than the material failure. Consequently, the optimum point is determined by material failure. The current results suggest that both the buckling and the static material failure should be considered in the design of the composite sandwich cylinder. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：691 / 697

页数：7

共 19 条

[1]

[Anonymous], NASTRAN US GUID

[2]

Carroll DL, 2007, FORTRAN GENETIC ALGO

[3] PROBABILISTIC IMPERFECTION SENSITIVITY ANALYSIS OF AXIALLY COMPRESSED COMPOSITE CYLINDERS [J].