Effect of initial tool-plate curvature on snap-through load of unsymmetric laminated cross-ply bistable composites

被引：35

作者：

Lee, Jong-Gu ^{[1
]}

Ryu, Junghyun ^{[1
]}

Kim, Seung-Won ^{[2
]}

Koh, Je-Sung ^{[2
]}

Cho, Kyu-Jin ^{[2
]}

Cho, Maenghyo ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mech & Aerosp Engn IAMD, Smart Struct & Design Lab, Seoul 151742, South Korea

[2] Seoul Natl Univ, Sch Mech & Aerosp Engn IAMD, Biorobot Lab, Seoul 151742, South Korea

来源：

COMPOSITE STRUCTURES | 2015年 / 122卷

基金：

新加坡国家研究基金会;

关键词：

Bistable composite; Snap-through; Residual stress; Initial curvature; CURED SHAPE;

D O I：

10.1016/j.compstruct.2014.11.037

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study, the effect of the initial curvature of a tool plate on the snap-through load of square cross-ply bistable composites was analyzed. The snap-through load is a function of the cured curvature and residual moment. In the curing process, both these physical quantities are affected by the initial tool-plate curvature. As a result, the snap-through load can also be changed by adjusting the initial tool-plate curvature. Then, for evaluating its effect on the snap-through load, a snap-through process was simulated by minimizing the total potential energy of the bistable composites through the Rayleigh-Ritz approximation method. The simulation results show that the snap-through load changes linearly with the initial tool-plate curvature. The simulation results are compared with those obtained experimentally and by a finite element analysis (FEA) in order to verify the pre-identified effect of the initial tool-plate curvature. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：82 / 91

页数：10

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