Active shape control of large thin-walled structures using ferroelectric single crystals

利用铁电单晶主动控制大型薄壁结构的形状。铁电单晶是5年前发明的，与传统的压电材料相比，它具有许多上级性能，特别是感应应变高达1.5%，比传统材料高一个数量级。本计画旨在将这些新的、功能强大的智能材料作为驱动器和传感器，应用于智能结构的形状控制。预期的成果是（a）铁电单晶非线性行为的新的本构理论;（B）形状控制问题的新定义和公式;以及（c）使用铁电单晶的智能结构形状控制的设计优化的创新理论框架。

Active shape control of large thin-walled structures using ferroelectric single crystals. Ferroelectric single crystals were invented 5 years ago, and they possess many superior properties compared to conventional piezoelectric materials, particularly the induced strain up to 1.5%, an order higher than conventional materials. This project aims to poineer the application of these new and powerful smart materials as actuators and sensors to shape control of smart structures. The expected outcomes are (a) a new constitutive theory for the non-linear behaviour of ferroelectric single crystals; (b) a novel definition and formulation for the shape control problem; and (c) an innovative theoretical framework for design optimization of shape control of smart structures using ferroelectric single crystals.