Thermo-electro-mechanical coupling dynamic analysis of piezoelectric structures via stabilized node-based smoothed radial point interpolation method

Abstract

The thermo-electro-mechanical coupling (TEMC) problem of the piezoelectric structure was analyzed. And the stabilized node-based smoothed radial point interpolation method (SNS-RPIM) was utilized during the computation. And the fundamental formulas were derived under thermo-mechanical load and the model of the problem was analyzed with triangular elements. The existence of thermal stress was taken into consideration. The dynamic behaviors for the TEMC problem were investigated by SNS-RPIM and finite element method (FEM) when different kinds of thermo-mechanical loadings were applied. The superiority of the proposed scheme for the TEMC problems was verified. The empirical constant was set to negative. Besides, the temperature rise can make the model softer and thermal load increase, which leads to a decrease of structural stiffness and natural frequency, thus, the displacement increases.

Keywords:

• Stabilized node-based smoothed radial point interpolation method
• dynamic analysis
• thermal effect
• thermo-electro-mechanical coupling
• piezoelectric effect

Disclosure statement

The authors declare that no potential conflicts of interest with respect to the research and authorship.

Data availability

All data in this study can be obtained by contacting the corresponding authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (Grant Number. 51975243); National Science Fund for Distinguished Young Scholars (Grant Number. 51925504); Jilin Scientific and Technological Development Program (Grant Number. 20210201037GX); Jilin Major Science and Technology Program (Grant Number. 20210301037GX); Project of Science and Technology Department of Jilin Province (Grant Number. 20210101405JC); Science and Technology Project of Department of Education of Jilin Province (Grant Number. JJKH20220976KJ) and Interdisciplinary Cultivation Project for Young Teachers and Students of Jilin University (Grant Number. 2020-JCXK-08).