Piezoelectric macro fiber composites (MFCs) are widely used for energy harvesting due to their flexibility and high electromechanical conversion efficiency. In previous research studies, numerical and analytical models have been developed for MFC-harvesters using homogenized electromechanical properties. In this paper, an analytical electroelastic coupled model, based on the mixing rules, is used to predict the output responses of an MFC-harvester coupled in 33-mode of the PZT fibers. The predicted responses exhibit variation because of the uncertainty of the parameters used in the proposed model. The research reported in this paper aims to estimate the effect of the uncertainty in the physical properties of both piezoelectric fibers and epoxy matrix on the model responses and to identify the parameters which cause large output variability. The uncertainties of the parameters are defined as the variability bounds based on the tolerances reported by the manufacturers. Global sens...

中文翻译：

---

宏观纤维复合材料压电能量收集的不确定度量化和整体灵敏度分析

压电大纤维复合材料（MFCs）由于其柔韧性和高机电转换效率而被广泛用于能量收集。在以前的研究中，已经利用均质的机电特性为MFC收割机开发了数值和分析模型。在本文中，基于混合规则的解析电弹性耦合模型用于预测以33模态的PZT纤维耦合的MFC捕集器的输出响应。由于所提出的模型中所用参数的不确定性，预测响应显示出变化。本文报道的研究旨在评估压电纤维和环氧基质的物理性能不确定性对模型响应的影响，并确定引起较大输出可变性的参数。参数的不确定性定义为基于制造商报告的公差的可变性范围。全球传感器