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首页> 外文期刊>Mechanical systems and signal processing >Parametric design-based modal damped vibrational piezoelectric energy harvesters with arbitrary proof mass offset: Numerical and analytical validations
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Parametric design-based modal damped vibrational piezoelectric energy harvesters with arbitrary proof mass offset: Numerical and analytical validations

机译:基于参数设计的模态阻尼振动压电能量采集器,具有任意证明质量偏移:数值和分析验证

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This paper focuses on the primary development of novel numerical and analytical techniques of the modal damped vibration energy harvesters with arbitrary proof mass offset. The key equations of electromechanical finite element discretisation using the extended Lagrangian principle are revealed and simplified to give matrix and scalar forms of the coupled system equations, indicating the most relevant numerical technique for the power harvester research. To evaluate the performance of the numerical study, the analytical closed-form boundary value equations have been developed using the extended Hamiltonian principle. The results from the electromechanical frequency response functions (EFRFs) derived from two theoretical studies show excellent agreement with experimental studies. The benefit of the numerical technique is in providing effective and quick predictions for analysing parametric designs and physical properties of piezoelectric materials. Although analytical technique provides a challenging process for analysing the complex smart structure, it shows complementary study for validating the numerical technique.
机译:本文关注具有任意证明质量偏移的模态阻尼振动能量采集器的新型数值和分析技术的初步发展。揭示并简化了使用扩展拉格朗日原理的机电有限元离散化的关键方程,以给出耦合系统方程的矩阵形式和标量形式,这表明了功率收集器研究中最相关的数值技术。为了评估数值研究的性能,已使用扩展的哈密顿原理建立了解析的闭式边界值方程。来自两个理论研究的机电频率响应函数(EFRF)的结果与实验研究显示出极好的一致性。数值技术的好处在于为分析压电材料的参数设计和物理特性提供有效而快速的预测。尽管分析技术为分析复杂的智能结构提供了一个具有挑战性的过程,但它显示了用于验证数字技术的补充研究。

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