Design and modeling of a novel bi-directional piezoelectric damping unit
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-01-03 |
| Journal | Smart Materials and Structures |
| Authors | Penghang Xu, Weifang Chen, Rupeng Zhu |
| Citations | 1 |
Abstract
Section titled āAbstractāAbstract This article focuses on the study of a piezoelectric shunt damping unit used in the vibration damping device of the gear transmission system. The existing butterfly and diamond shaped damping units have a single mode of operation and are inefficient in terms of vibration energy consumption. Therefore, in order to improve the performance of the damping ring, a bi-directional compression piezoelectric shunt damping unit is proposed in this paper. Firstly, a high accuracy finite element model of the bi-directional piezoelectric damping unit was established on the basis of the piezoelectric stack equivalent model. Second, a test prototype was fabricated. The open-circuit voltage and displacement of this unit under bi-directional loading were verified on a high-precision test bench. The experimental results show that the model errors are all within 15%, indicating the high accuracy of the finite element model. It is also confirmed that the proposed bi-directional structure can realize the transfer of tensile and compressive loads. On this basis, the effects of the structural parameters on the open-circuit voltage, deformation displacement, and Mises stress are revealed by the finite element model. The results show that increasing the thickness of the connecting rod will reduce the open-circuit voltage output, but can effectively improve the deformation and stress of the structure. Increasing the connecting rod length increases the open-circuit voltage output to some extent, however, can be detrimental to the deformation and stress of the structure. Increasing the connecting rod spacing has a minimal effect on the open-circuit voltage and deformation displacement, but can effectively reduce the structural stress. This research work has beneficial effect on the design of vibration damping ring for gear transmission system.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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