Analysis of morphing, multi stable structures actuated by piezoelectric patches

被引：117
|
作者：
Portela, Pedro [1 ]
Camanho, Pedro [1 ]
Weaver, Paul [2 ]
Bond, Ian [2 ]
机构：
[1] Univ Porto, Fac Engn, P-4200465 Oporto, Portugal
[2] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England
来源：
COMPUTERS & STRUCTURES | 2008年 / 86卷 / 3-5期
基金：
英国工程与自然科学研究理事会;
关键词：
morphing structures; asymmetrical laminates; snap-through; MFC; morphing; multistable plates; composites; piezoelectric; actuation; FE modelling;
D O I：
10.1016/j.compstruc.2007.01.032
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this article a novel morphing structure concept is studied using non-linear Finite Element Analysis (FEA). Bi-stable asymmetrical laminates can be snapped between two geometries through a buckling mechanism that is activated by an applied load. A piezoelectric Macro-Fibre Composite (MFC) actuator was chosen to provide this activation load. Bi-stable structures will maintain a given geometrical state without the need for a constant actuation force. FEA was used to predict the two stable geometries, to understand the buckling mechanism and to evaluate the feasibility of using MFC actuators for switching between states. Environmental effects like moisture absorption were also included in the analysis. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：347 / 356
页数：10
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