Energy principle of ferroelectric ceramics and single domain mechanical model
文献类型：期刊论文
| 作者 | Liu F(刘峰) ; Li HJ(李海军); Wang ZQ(王自强)
|
| 刊名 | Acta Mechanica Sinica
 |
| 出版日期 | 2007 |
| 卷号 | 23期号:5页码:531-543 |
| 通讯作者邮箱 | tcwang@imech.ac.cn |
| 关键词 | Ferroelectric Ceramic Domain Switching The Volume Fraction Of Domain Switching Single Domain Mechanical Model Finite-Element-Analysis Thermodynamical Formulation Constitutive Relations Behavior Simulation Motion Plzt Law |
| ISSN号 | 0567-7718 |
| 通讯作者 | Wang, TC (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China. |
| 中文摘要 | Many physical experiments have shown that the domain switching in a ferroelectric material is a complicated evolution process of the domain wall with the variation of stress and electric field. According to this mechanism, the volume fraction of the domain switching is introduced in the constitutive law of ferroelectric ceramic and used to study the nonlinear constitutive behavior of ferroelectric body in this paper. The principle of stationary total energy is put forward in which the basic unknown quantities are the displacement u (i) , electric displacement D (i) and volume fraction rho (I) of the domain switching for the variant I. Mechanical field equation and a new domain switching criterion are obtained from the principle of stationary total energy. The domain switching criterion proposed in this paper is an expansion and development of the energy criterion. On the basis of the domain switching criterion, a set of linear algebraic equations for the volume fraction rho (I) of domain switching is obtained, in which the coefficients of the linear algebraic equations only contain the unknown strain and electric fields. Then a single domain mechanical model is proposed in this paper. The poled ferroelectric specimen is considered as a transversely isotropic single domain. By using the partial experimental results, the hardening relation between the driving force of domain switching and the volume fraction of domain switching can be calibrated. Then the electromechanical response can be calculated on the basis of the calibrated hardening relation. The results involve the electric butterfly shaped curves of axial strain versus axial electric field, the hysteresis loops of electric displacement versus electric filed and the evolution process of the domain switching in the ferroelectric specimens under uniaxial coupled stress and electric field loading. The present theoretic prediction agrees reasonably with the experimental results given by Lynch. |
| 类目[WOS] | Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Engineering ; Mechanics |
| 关键词[WOS] | FINITE-ELEMENT-ANALYSIS ; THERMODYNAMICAL FORMULATION ; CONSTITUTIVE RELATIONS ; BEHAVIOR ; SIMULATION ; MOTION ; PLZT ; LAW |
| 收录类别 | SCI ; EI ; CSCD |
| 语种 | 英语 |
| WOS记录号 | WOS:000249804600008 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33909]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Liu F,Li HJ,Wang ZQ. Energy principle of ferroelectric ceramics and single domain mechanical model[J]. Acta Mechanica Sinica,2007,23(5):531-543. |
| APA | 刘峰,李海军,&王自强.(2007).Energy principle of ferroelectric ceramics and single domain mechanical model.Acta Mechanica Sinica,23(5),531-543. |
| MLA | 刘峰,et al."Energy principle of ferroelectric ceramics and single domain mechanical model".Acta Mechanica Sinica 23.5(2007):531-543. |
入库方式： OAI收割
来源：力学研究所
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