Enthalpy - based homogenization procedure for composite piezoelectric modules with integrated electrodes
Enthalpy - based homogenization procedure for composite piezoelectric modules with integrated electrodes
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DOI：
10.12989/sss.2013.12.5.579
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发表时间：
2013-11
影响因子：
3.5
通讯作者：
B. Kranz;A. Benjeddou;W. Drossel
中科院分区：
文献类型：
--
作者：
B. Kranz;A. Benjeddou;W. Drossel
提出了一种新的基于焓的集成电极复合压电模块机电材料参数均匀化方法。它是基于后者的代表体积元（RVE）的有限元（FE）建模。与大多数以前发表的均匀化方法，平均量的基础上，所提出的方法使用的机电焓的直接评价。因此，对于弹性、压电和介电材料参数的线性正交各向异性压电复合材料行为，使用17个载荷情况（LC），其中每个载荷情况直接导致一个材料参数。这使得有可能制定一个非常严格和容易的程序处理。结合17 LC，基于焓的均匀化特别适用于具有集成电极的层压复合压电模块。在这种情况下，必须在电极处而不是在RVE FE模型边界处给出电负载。所提出的程序进行验证，通过比较经典的1-3压电微纤维（纵向极化）增强复合材料和剪切压电宏纤维（横向极化）复合材料模块的文献可用的结果。
A new enthalpy - based procedure for the homogenization of the electromechanical material parameters of composite piezoelectric modules with integrated electrodes is presented. It is based on a finite element (FE) modeling of the latter`s representative volume element (RVE). In contrast to most previously published homogenization approaches that are based on averaged quantities, the presented method uses a direct evaluation of the electromechanical enthalpy. Hence, for the linear orthotropic piezoelectric composite behavior full set of elastic, piezoelectric, and dielectric material parameters, 17 load cases (LC) are used where each load case leads directly to one material parameter. This gives the possibility to elaborate a very strict and easy to program processing. In conjunction with the 17 LC, the enthalpy - based homogenization is particularly suitable for laminated composite piezoelectric modules with integrated electrodes. In this case, the electric load has to be given at the electrodes rather than at the RVE FE model boundaries. The proposed procedure is validated through its comparison to literature available results on a classical 1-3 piezoelectric micro fiber (longitudinally polarized) reinforced composite and a shear piezoelectric macro-fiber (transversely polarized) composite module.