Reducing tensile stress concentration in perforated hybrid laminate by genetic algorithm

被引：27

作者：

Cho, H. K. ^{[1
]}

Rowlands, R. E. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Mech Engn, Madison, WI 53706 USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 13期

基金：

美国国家科学基金会;

关键词：

structural materials; stress concentrations; laminates; optimization; mimicry;

D O I：

10.1016/j.compscitech.2006.09.022

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Holes are a cornmon geometric discontinuity in composite structures. Since stress concentrations at a hole can decrease strength, it is desirable that such concentrations be as low as possible. This paper demonstrates ability to minimize tensile stress concentrations in a perforated laminated composite. Synergizing a genetic algorithm optimization method with a specially developed FEM program enables one to optimally orient the fibers locally both within the plies and from ply-to-ply, and thereby significantly reduced the tensile stress concentration associated with a hole. The present evolutionary technique provides more than just a favorable stacking sequence of variouis rectilinearly orthotropic plies having different fiber orientations. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2877 / 2883

页数：7

共 33 条

[11]

Goldberg D. E., 1992, Complex Systems, V6, P333

[12]

Goldberg D.E, 1989, GENETIC ALGORITHMS S

[13]

Gurdal Z., 1998, Design and optimization of laminated composite materials

[14] ALLEVIATION OF STRESS-CONCENTRATION WITH ANALOG REINFORCEMENT [J].