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Characterisation and modelling of the cured shapes of arbitrary layup bistable composite laminates

机译：任意叠层双稳态复合材料层压板固化形状的表征和建模

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摘要

Asymmetric laminates can have a bistable response to loading, making them of particular interest for applications requiring a large deflection with relatively small and removable energy input. After nearly 30 years of research effort the effects of ply orientation and laminate geometry on the room-temperature shapes of such laminates are well understood and the temperature dependent deformations of laminates of arbitrary layup can be quantitatively predicted. With attention switching to the design of mechanisms incorporating bistable laminates for actuation there is an increasing importance placed on the accuracy and the sensitivity of modelling techniques to predict out-of-plane deflections. This paper presents the results of a novel experimental investigation to map the surface profiles of a series of arbitrary layup laminates. It is concluded that while existing modelling techniques are successful in accurately predicting room-temperature shapes, the sensitivity of solutions to imperfections is significant.
机译：不对称层压板对负载可能具有双稳态响应，这使得它们特别需要使用较大的挠度且具有相对较小且可移动的能量输入的应用。经过近30年的研究努力，层板取向和层压板几何形状对此类层压板的室温形状的影响已广为人知，并且可以定量预测任意铺层的层压板的温度相关变形。随着注意力转向结合双稳态层压材料用于致动的机构的设计，对于预测平面外挠度的建模技术的准确性和敏感性越来越重视。本文介绍了新颖的实验研究结果，以绘制一系列任意叠层层压板的表面轮廓。结论是，尽管现有的建模技术可以成功准确地预测室温形状，但解决方案对缺陷的敏感性却很重要。

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