材料科学
共轭梯度法
快速傅里叶变换
体积分数
基质(水族馆)
磁电机
压电
复合材料
卷积(计算机科学)
机械
电压
数学
物理
电气工程
工程类
计算机科学
海洋学
地质学
算法
机器学习
人工神经网络
作者
Yijin Sui,Wenzhong Wang,Haibo Zhang,Liang He
标识
DOI:10.1016/j.ijsolstr.2023.112217
摘要
The 3D frictional contact model of graded magneto-electro-elastic (MEE) film-substrate system under electromagnetic fields is presented. The semi-analytical method (SAM) is used to solve this multi-physical contact problem. Firstly, the frequency response functions (FRFs) for every layer of MEE material subjected to unit mechanical, electric and magnetic loads are derived. Conjugate gradient method (CGM) is then employed to obtain contact responses with Discrete convolution-fast Fourier transformation (DC-FFT) speeding related calculations. Finally, multilayered model is used to approximate graded film with two types of grads, exponentially varying grad (EVG) and volume-fraction varying grad (FVG), the effects of the type and thickness of graded film and the friction coefficient are investigated. The results show that EVG film with gradient index less than one or FVG film with smaller volume fraction of piezoelectric phase at the surface are preferred for the MEE film-substrate systems.
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