...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mechanical systems and signal processing >A comprehensive electromechanically coupled model for non-uniform piezoelectric energy harvesting composite laminates
【24h】

A comprehensive electromechanically coupled model for non-uniform piezoelectric energy harvesting composite laminates

机译：用于非均匀压电能量收集复合层压材料的综合机电耦合模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Achieving high power densities through initiative designs of piezoelectric harvester in various geometries is a key point in vibration energy harvesting. State-of-the-art analytical and finite element models (FEMs) ignore structural damping, inter-laminar continuity, shear stresses, and contact layer effect between the substrate and piezoelectric layers and in addition cannot predict the performance of many recently introduced piezoelectric harvester configurations, such as non-uniform, thick piezoelectric patches, and variable thickness beams. This paper presents a comprehensive finite element formulation to calculate power generation by piezoelectric harvesters in a broader range of design cases. The presented high-order shear FEM not only is suitable for thick composite-based harvesters but also accommodates the drawbacks of the previous methods. The coupled finite element approach is verified versus experimental and analytical results. The model developed in this work is employed to analyze a non-uniform energy harvester with an E-glass fiber composite substrate layer sandwiched between piezoelectric layers with variable thickness. The numerical results show that, the advance formulation is capable of analyzing various piezoelectric harvesters including various influential parameters such as contact layer and damping dissipation. The results, furthermore, indicate that variable piezoelectric-layer thickness and an optimum fiber direction in composite substrate lamina can enhance performance of the piezoelectric harvester.
机译：通过各种几何形状的压电收割机的主动设计实现高功率密度是振动能量收集的关键点。最先进的分析和有限元模型（FEMS）忽略结构阻尼，层间连续性，剪切应力和接触层效应，并且此外不能预测许多最近引入的压电收割机的性能配置，例如不均匀，厚的压电贴片和可变厚度梁。本文介绍了全面的有限元配方，以在更广泛的设计案例中计算压电收割机的发电。所提出的高阶剪切FEM不仅适用于厚复合材料的收割机，还适用于先前方法的缺点。耦合有限元方法是验证的与实验和分析结果。在该工作中开发的模型用于分析具有夹在具有可变厚度的压电层之间的E-玻璃纤维复合基板层的非均匀能量收割机。数值结果表明，预先配方能够分析各种压电收割机，包括各种影响力的参数，例如接触层和阻尼耗散。此外，结果表明复合衬底薄片中可变压电层厚度和最佳光纤方向可以增强压电收割机的性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号