MODELLING SMART STRUCTURES WITH SEGMENTED PIEZOELECTRIC SENSORS AND ACTUATORS
MODELLING SMART STRUCTURES WITH SEGMENTED PIEZOELECTRIC SENSORS AND ACTUATORS
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DOI：
10.1006/jsvi.2000.2944
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发表时间：
2000-08
影响因子：
4.7
通讯作者：
K. Sze;L. Yao
中科院分区：
文献类型：
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作者：
K. Sze;L. Yao
在本文中，一些有限元模型已经开发的智能结构的综合建模与分段压电传感和驱动补丁。这些包括一个八节点的固体壳元建模均匀和层压主机结构，以及一个八节点的固体壳和一个四节点的压电膜元件建模表面粘结的压电传感和致动补丁。为了解决这些单元中的闭锁问题并提高其精度，采用了假定的自然应变和杂交应力公式。此外，压电贴片通常涂覆有金属化。引入了电节点的概念，可以消除约束位于同一金属化层上的物理节点的电势相等的负担。一些问题进行了研究，开发的有限元模型和比较与其他特设单元模型。
In this paper, a number of finite element models have been developed for comprehensive modelling of smart structures with segmented piezoelectric sensing and actuating patches. These include an eight-node solid-shell element for modelling homogeneous and laminated host structures as well as an eight-node solid-shell and a four-node piezoelectric membrane elements for modelling surface bonded piezoelectric sensing and actuating patches. To resolve the locking problems in these elements and improve their accuracy, assumed natural strain and hybrid stress formulations are employed. Furthermore, piezoelectric patches are often coated with metallization. The concept of electric nodes is introduced that can eliminate the burden of constraining the equality of the electric potential for physical nodes lying on the same metallization. A number of problems are studied by the developed finite element models and comparisons with other ad hoc element models are presented.