Reduced-order modeling with multiple scales of electromechanical systems for energy harvesting
Reduced-order modeling with multiple scales of electromechanical systems for energy harvesting
复制标题
用于能量收集的多尺度机电系统降阶建模
DOI：
10.1140/epjst/e2019-800173-x
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
G. Grassi
中科院分区：
文献类型：
--
作者：
C. Maruccio;G. Quaranta;G. Grassi
在不久的将来，旨在通过从环境振动中获取能量来为无线节点供电的新技术可能成为一些结构监测应用的实用解决方案。鉴于压电能量采集器可能的大规模应用，需要对这些设备中的接口进行精确建模，以实现更先进和可靠的仿真，因为它们可能对智能监控基础设施的功能和性能产生很大影响。为此，提出了一种新的多尺度、多物理场混合方法来评估压电能量收集装置的动态响应。在该方法的框架内，采用FE2方法计算了最关键界面的微尺度应力和应变水平。然后通过施加适当的静力模式得到整个装置的位移-载荷曲线（所谓的容量曲线或推覆曲线）。最后，在非线性静力分析的基础上，对降阶模型的参数进行了标定。将该降阶模型用于能量收集装置的高效动态分析。
New technologies that aim at powering wireless nodes by scavenging the energy from ambient vibrations can be a practical solution for some structural monitoring applications in the near future. In view of possible large-scale applications of piezoelectric energy harvesters, an accurate modeling of the interfaces in these devices is needed for more advanced and reliable simulations, since they might have large influence on functionality and performance of smart monitoring infrastructures. In this perspective, a novel multiscale and multiphysics hybrid approach is proposed to assess the dynamic response of piezoelectric energy harvesting devices. Within the framework of the presented approach, the FE2 method is employed to compute stress and strain levels at the microscale in the most critical interfaces. The displacement-load curve of the whole device (so-called capacity curve or pushover curve) is then obtained by means of the application of a suitable pattern of static forces. Finally, the parameters of a reduced-order model are calibrated on the basis of the nonlinear static analysis. This reduced-order model, in turn, is employed for the efficient dynamic analysis of the energy harvesting device.
包括耗散不完善界面的粘塑性复合材料的降阶均质化
影响因子：
3.9
作者：
Matthias Leuschner;Felix Fritzen
通讯作者：
Felix Fritzen
影响因子：
2.7
作者：
Covezzi, F.;de Miranda, S.;Sacco, E.
通讯作者：
Sacco, E.