固体材料中微孔洞间挠曲电场的相互作用  

Interaction Between Flexoelectric Fields Associated With Microholes in Solids

作　　者：郝一涵 田新鹏 邓谦 HAO Yihan;TIAN Xinpeng;DENG Qian(Department of Engineering Mechanics,School of Aerospace Engineering,Huazhong University of Science and Technology,Wuhan 430074,P.R.China;Department of Engineering Mechanics,School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,P.R.China)

机构地区：[1]华中科技大学航空航天学院工程力学系,武汉430074 [2]西安理工大学土木建筑工程学院工程力学系,西安710048

出　　处：《应用数学和力学》2024年第11期1381-1391,共11页Applied Mathematics and Mechanics

基　　金：国家自然科学基金(12172142)。

摘　　要：该文研究了固体材料中常见缺陷微孔洞间挠曲电场的相互作用.通过配点混合有限元法模拟并对比了单孔和双孔模型中孔洞附近的应力、应变梯度以及挠曲电场的分布情况.数值模拟结果表明,当两个孔洞间的距离逐渐减小时,两孔附近的挠曲电场开始发生相互作用.此外,进一步探讨了微孔洞间挠曲电场的相互作用随孔间距离和孔洞尺寸的变化规律.结果表明,当孔间距离越近,尺寸越小时,孔间挠曲电场的相互作用越强.The flexoelectric fields' interactions between microholes of common defects in solid materials are studied.With the collocation mixed finite element method,the distributions of the stress,the strain gradient,and the flexoelectric field around the hole of the single hole and the double holes,respectively,are compared.The numerical simulation results indicate that,the flexoelectric fields' interaction around the double holes emerges with the gradual decrease of the distance between the double holes.In addition,the effects of the distance between holes and the size of holes on the flexoelectric fields' interaction between microholes are explored.The results show that,reducing the distance between double holes and shrinking the size of holes will induce to an enhanced interaction of the flexoelectric field between double holes.

关 键 词：微孔间相互作用 挠曲电效应 孔间距离 孔洞尺寸 

分 类 号：O34[理学—固体力学]