Modeling and optimization of bistable composite laminates for piezoelectric actuation
Modeling and optimization of bistable composite laminates for piezoelectric actuation
复制标题
用于压电驱动的双稳态复合材料层压板的建模和优化
DOI：
10.1177/1045389x11427478
复制
发表时间：
2011
影响因子：
2.7
通讯作者：
C. Bowen
中科院分区：
文献类型：
--
作者：
D. Betts;H. A. Kim;C. Bowen
自适应结构允许在低的和不连续的能量输入的应用下的大变形，在航空航天工业中获得越来越多的兴趣。非对称复合材料层合板的压电驱动是实现形状控制的一种潜在机制。本文提出了一种优化设计的双正交压电层合板可逆跳通的研究。该配方优化的承载能力的结构受到偏转和驱动限制，通过变化的铺层方向和层压板的几何形状。我们发现问题是多峰的多个最优值依赖于加载和管理单元的方向和复杂的约束边界的相互作用。通过同时使用两个压电层的正工作范围和负工作范围来实现总致动电压的降低。
Adaptive structures that allow large deformations under the application of a low and noncontinuous energy input are gaining increasing interest in the aerospace industry. One potential mechanism of realizing shape control is piezoelectric actuation of asymmetric composite laminates. This article presents an optimization study for the design of bistable laminates for a reversible snap-through enabled by two orthogonal piezoelectric layers. The formulation optimizes the load-carrying capability of the structure subject to deflection and actuation limits through a variation in ply orientations and laminate geometry. We find the problem to be multimodal with the multiple optima to be dependent on the loading and snap-through directions and the complex constraint boundary interactions. A reduction in the total actuation voltage is achieved through the simultaneous use of the positive and negative working ranges of the two piezoelectric layers.