The hygro-thermo-electro-mechanical coupling edge-based smoothed point interpolation method for the response of functionally graded piezoelectric structure under hygrothermal environment

被引：15
作者：
Nie, Bin [1 ]
Ren, Shuihui [1 ]
Li, Wanqing [2 ]
Zhou, Liming [1 ]
Liu, Changyi [3 ]
机构：
[1] Jilin Univ, Sch Mech & Aerosp Engn, Renmin St 5988, Changchun 130022, Jilin, Peoples R China
[2] Aviat Univ Air Force, Aviat Operat Serv Coll, Nanhu Rd 2222, Changchun 130022, Jilin, Peoples R China
[3] Jilin Univ, Key Lab Bion Engn, Minist Educ, Renmin St 5988, Changchun 130022, Jilin, Peoples R China
来源：
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS | 2021年 / 130卷 / 130期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Hygro-thermo-electro-mechanical; Static behavior; Hygrothermal effect; Functionally graded piezoelectric structure; Edge-based smoothed point interpolation method; FINITE-ELEMENT-METHOD; 3-DIMENSIONAL EXACT SOLUTION; G SPACE THEORY; WEAK W-2 FORM; METHOD ES-FEM; UNIFIED FORMULATION; T-FEM; VIBRATION; MODEL; COMPOSITE;
D O I：
10.1016/j.enganabound.2021.05.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A B S T R A C T In this paper, we analyze the hygro-thermo-electro-mechanical (HTEM) coupling problem of functionally graded piezoelectric (FGPE) structure based on edge-based smoothed point interpolation method (ES-PIM). The basic equations for FGPE structure are derived in the multi-physical field. Triangular elements adopted in ES-PIM can be generated automatically and suitable for complicated structures. The responses for the HTEM coupling problem are calculated by ES-PIM and finite element method (FEM) under different hygrothermal conditions. Through the numerical examples, the factors related to the temperature and moisture fields are explored. The exponential factor and the hygrothermal effect on the responses of the FGPE structure are also studied. Besides, the advantages of proposed method for HTEM coupling problems are also validated by several numerical examples. These solutions also indicate that the increase of temperature and moisture concentration decreases the structural stiffness when empirical constants are set to negative numbers, leading to the decrease of frequency and variation of displacement. This article proposes an excellent numerical method and provides a reference for the design and application of piezoelectric structures.
引用
收藏
页码：29 / 39
页数：11
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