Data underlying the PhD dissertation chapter 4: Benchmark Energy Harvesting Model for Fiber-Reinforced Cementitious Composites Utilizing Surface-Mounted Piezoelectric Materials

This dataset contains the data supporting Chapter 4 of the dissertation. This chapter has been published as a peer-reviewed journal article: https://doi.org/10.1088/1361-665X/ad43cbThis work provides a theoretical model for evaluating the energy harvesting of bendable ECC using surface-mounted polyvinylidene fluoride (PVDF). In the mechanical part, concrete damage plasticity model based on the explicit dynamic analysis was utilized to simulate the dynamic flexural behavior of ECC beam under different dynamic loading rates. The mechanism of force transfer through the bond layer between the PVDF film and ECC specimen was simulated by a surface-surface sliding friction model wherein the PVDF film was simplified as shell element to reduce computational cost. Then, the electromechanical behavior of the piezoelectric film was simulated by a piezoelectric finite element model. A simplified model was also given for a quick calculation. The theoretical model was verified with the experimentally measured mechanical and electrical results from the literature. Finally, a parametric analysis of the effects of electromechanical parameters on the efficiency of energy harvesting was performed. The verified theoretical model can provide a useful tool for design and optimization of cementitious composite systems for energy harvesting application.

本数据集包含支撑学位论文第4章的相关数据。该章节已作为同行评议期刊论文发表：https://doi.org/10.1088/1361-665X/ad43cb。本工作针对采用表面粘贴式聚偏氟乙烯（polyvinylidene fluoride, PVDF）薄膜的可弯曲工程水泥基复合材料（Engineered Cementitious Composite, ECC）的能量收集性能评估构建了理论模型。在力学建模部分，本研究采用基于显式动力学分析的混凝土损伤塑性模型，以模拟不同动荷载速率下ECC梁的动态弯曲行为。针对PVDF薄膜与ECC试件间粘结层的力传递机制，本研究采用表面-表面滑动摩擦模型进行仿真，并将PVDF薄膜简化为壳单元以降低计算成本。随后，通过压电有限元模型对压电薄膜的机电行为进行仿真，并给出了用于快速计算的简化模型。本研究通过已发表文献中的实测力学与电学结果对所构建的理论模型进行了验证。最后，开展了机电参数对能量收集效率影响的参数化分析。经验证的理论模型可为用于能量收集应用的水泥基复合材料系统的设计与优化提供实用工具。