在压电材料中的矩形裂的理论和模拟分析
1School of Applied Science, Taiyuan University of Science and Technology, Taiyuan, 030024, China. 401731248@qq.com.
Scientific reports
|April 28, 2025
概括
内部矩形裂显著降解压电材料. 这项研究使用先进的方法,如机器学习来预测裂传播,并优化材料设计以提高可靠性.
科学领域:
- 固体力学 固体力学是什么
- 材料科学 材料科学 材料科学
- 电磁主义 电磁主义
背景情况:
- 内部裂,特别是矩形裂,严重损害了压电材料的机械和电气性能.
- 这种降解损害了使用这些材料的设备的可靠性和功能.
研究的目的:
- 为了研究压电材料中矩形裂的机电联接效应.
- 建立一个理论框架来分析裂纹尖端场和传播行为.
- 引入新的机器学习和响应表面方法,用于裂分析.
主要方法:
- 使用机电合方程和构成关系的理论分析.
- 通过有限元法进行数值模拟,以模拟各种负载下的裂行为.
- 应用随机森林机器学习用于预测建模和响应表面方法论的影响分析.
主要成果:
- 理论分析提供了关于裂纹尖端应力和电位移场的见解.
- 有限元模拟揭示了机械和电机械负荷下的应力,位移和潜在变化.
- 随机森林模型证明了裂行为的高预测准确性.
- 响应表面方法识别了影响裂传播的关键因素.
结论:
- 矩形裂对压电材料性能构成重大威胁.
- 开发的理论和数值模型准确地捕捉了裂引起的效应.
- 机器学习和响应表面方法为分析和优化具有内部裂纹的压电材料提供了强大的工具.
更多相关视频
10:39Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
Published on: August 5, 2020
6.7K
06:54A Virtual Simulation Experiment of Mechanics: Material Deformation and Failure Based on Scanning Electron Microscopy
Published on: January 20, 2023
2.0K
相关概念视频
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
221
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
221
01:20Microcracking in Concrete
87
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
87