压电三明治纳米板的尺寸依赖的分散特性,考虑到表面效应
Biao Hu1, Juan Liu2, Aizhong Luo3
1School of Civil Engineering, Guizhou University of Engineering Science, Bijie, 551700, China.
Scientific reports
|May 17, 2025
概括
本研究使用非局部应变梯度理论 (NSGT) 探索了压电三明治纳米板. 结果显示,尺度和粘弹性效应取决于波数 (WN),而表面效应 (SE) 与纳米板厚度有关.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 压电三明治纳米板在微/纳米电机系统中至关重要.
- 了解它们的动态行为,特别是分散,对于设备性能至关重要.
- 非局部效应和表面现象显著影响纳米级材料的特性.
研究的目的:
- 为了研究压电三明治纳米板的分散特性.
- 分析非局部应变梯度理论 (NSGT),表面效应 (SE) 和粘弹性基板的影响.
- 探索频率,相速 (PV) 和波数 (WN) 之间的关系.
主要方法:
- 非局部应变梯度理论 (NSGT) 和汉密尔顿原理的应用.
- 使用三参数粘弹性模型对粘弹性基板进行建模.
- 对表面效应 (弹性,压电,介电参数,余应力) 的系统分析.
主要成果:
- 确定了分散行为 (频率和PV与WN).
- 对分散的尺度和粘弹性影响强烈依赖波数 (WN).
- 表面效应 (SEs) 对频率的影响与纳米板厚度密切相关.
结论:
- 该研究提供了一个全面的理解分散在压电三明治纳米板中的分散.
- 尺度,粘弹性和表面效应是影响纳米板动态的关键因素.
- 结果强调了考虑这些影响对于精确的纳米板设计和应用的重要性.
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