Butterfly Change in Electric Field-Dependent Young's Modulus: Bulge Test and Phase Field Model
In: SCI, 2017
Online
academicJournal
Zugriff:
The field-dependent Young's modulus shows a promising application in the design and miniaturization of phononic crystals, tunable mechanical resonators, interdigital transducers, etc. With the multifield bulge-test instrument developed by our group, the electric field-tunable elastic modulus of ferroelectric films has been studied experimentally. A butterfly change in the Young's modulus of lead titanate zirconate (PZT) film under biaxial tensile stress state with electric field has been discovered for the first time. Based on the phase field model, an electromechanical coupling model is constructed, and a case of PZT ferroelectric film subjected to a vertical electric field and horizontal tensile strains is simulated. The numerical results show that the change in the Young's modulus is proportional to the variation of volume fraction of 90-deg domain switching under a pure tensile strain. It is the constraint of 90-deg domain switching by the electric field that contributes to the butterfly change in the elastic modulus. ; National Natural Science Foundation of China [11522214, 11090331, 11521202]; National Programs for Scientific Instruments Research and Development of China [2012YQ03007502]; Beijing NOVA Program [Z151100000315041] ; SCI(E) ; ARTICLE ; 5 ; 84
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Butterfly Change in Electric Field-Dependent Young's Modulus: Bulge Test and Phase Field Model
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Autor/in / Beteiligte Person: | Zhang, Honglong ; Yu, Zejun ; Pei, Yongmao ; Fang, Daining ; Pei, YM (reprint author), Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China. ; Fang, DN (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China. ; South China Univ Technol, Coll Civil Engn & Transportat, Guangzhou 510640, Guangdong, Peoples R China. ; Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China. ; Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China. |
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Zeitschrift: | SCI, 2017 |
Veröffentlichung: | JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 2017 |
Medientyp: | academicJournal |
ISSN: | 0021-8936 (print) ; 1528-9036 (print) |
DOI: | 10.1115/1.4036298 |
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