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。本研究构建了一套理论模型，用于评估采用表面粘贴聚偏氟乙烯（polyvinylidene fluoride, PVDF）的可弯曲工程水泥基复合材料（Engineered Cementitious Composites, 简称ECC）的能量收集性能。在力学模拟环节，本研究采用基于显式动力学分析的混凝土损伤塑性模型，模拟了不同动态加载速率下ECC梁的动态弯曲受力特性。针对PVDF薄膜与ECC试样间粘结层的传力机制，本研究采用面-面滑动摩擦模型开展模拟，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模拟了压电薄膜的机电行为，同时给出简化模型以实现快速计算。本研究采用已发表文献中的实测力学与电学结果对所提出的理论模型进行了验证。最后，针对机电参数对能量收集效率的影响开展了参数化分析。经验证的理论模型可为面向能量收集应用的水泥基复合材料体系的设计与优化提供实用工具。