In passive vibration isolation, a bistable composite plate can be used to generate high-static low-dynamic stiffness, and in vibratory energy harvesting, when used with piezoelectric film flexing, the bistable composite plate can enhance the performance via snap-through motion. In the present work, we designed a bistable piezo-composite plate for both vibration isolation and energy harvesting. The analytical model for performance prediction is derived from the virtual work principle and the composite elasticity. Displacement transmissibility and output voltage generation were analytically determined for different mechanical and electrical parameters. The results illustrate that the bistable piezo-composite plate improves the feasibility and effectiveness of the integration design. Hardening and softening nonlinear phenomena coexist in both the displacement transmissibility and the output voltage plot. Approximate analytical solutions and numerical simulations are in good agreement. Both analytical and numerical results demonstrate that, at a certain frequency bands, enhanced energy harvesting is accompanied by a vibration transmissibility reduction. Compared with a linear system with the bistable piezo-composite plate removed, it achieved a reduction in the displacement transmissibility of about 13 dB at 100 Hz, simultaneously, and produced a considerable output voltage of about 0.05 V.

中文翻译：

---

通过双稳态压电复合板实现集成的隔振和能量收集

在被动隔振中，双稳态复合板可用于产生高静态低动态刚度，而在振动能量收集中，当与压电膜弯曲配合使用时，双稳态复合板可通过快速移动来增强性能。在目前的工作中，我们设计了用于振动隔离和能量收集的双稳态压电复合板。性能预测的分析模型是从虚拟工作原理和复合弹性得出的。通过解析确定了不同机械和电气参数的位移传递率和输出电压的产生。结果表明，双稳态压电复合板提高了集成设计的可行性和有效性。硬化和软化非线性现象同时存在于位移传递率和输出电压曲线图中。近似分析解决方案和数值模拟非常吻合。分析和数值结果均表明，在某些频带上，能量收集的增强伴随振动传递率的降低。与移除了双稳态压电复合板的线性系统相比，它在100 Hz下同时实现了位移传递率降低约13 dB，并产生了约0.05 V的可观输出电压。增强的能量收集伴随着振动传递率的降低。与移除了双稳态压电复合板的线性系统相比，它在100 Hz下同时实现了位移传递率降低约13 dB，并产生了约0.05 V的可观输出电压。增强的能量收集伴随着振动传递率的降低。与移除了双稳态压电复合板的线性系统相比，它在100 Hz下同时实现了位移传递率降低约13 dB，并产生了约0.05 V的可观输出电压。