Electroelastic field concentrations ahead of electrodes in multilayer piezoelectric actuators: experiment and finite element simulation

Shindo, Yasuhide; Yoshida, M.; Narita, Fumio; Horiguchi, Katsumi

doi:10.1016/j.jmps.2003.09.017

Cited by 85 publications

(45 citation statements)

References 13 publications

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“…The finite element mesh had 1900 elements and 1981 nodes. Our previous measurements of strain near electrode tip in piezoelectric devices Shindo et al 2004] and piezoelectric actuator tip deflection [Hayashi et al 2003] verified the accuracy of the above scheme, and showed that the results obtained are of general applicability. McMeeking [2004] showed that due to a change of stored electrostatic energy within the crack, the energy release rate for an elliptical cavity of any shape is not equal to the energy release rate G for the slit-like crack as the material separates.…”

Section: Discussionsupporting

confidence: 59%

Dynamic fatigue of cracked piezoelectric ceramics under electromechanical loading: three-point bending test and finite element analysis

Shindo

Narita

Hirama

2009

J. Mech. Mater. Struct.

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This paper studies the dynamic fatigue or slow crack growth in piezoelectric ceramics under electromechanical loading by a combined numerical-experimental approach. Constant load-rate testing was conducted in three-point flexure using the single-edge precracked-beam specimens under zero and positive electric fields, and the effects of electric field and loading-rate on the fracture load and crack propagation were examined. A finite element analysis was also employed to calculate the energy release rate for the permeable, impermeable and open crack models, and the effect of electric field on the energy release rate was discussed. Crack propagation velocity versus energy release rate curves at various loading-rate were then estimated based on the finite element analysis using measured data.

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Section: Discussionsupporting

confidence: 59%

Dynamic fatigue of cracked piezoelectric ceramics under electromechanical loading: three-point bending test and finite element analysis

Shindo

Narita

Hirama

2009

J. Mech. Mater. Struct.

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“…The spontaneous polarization P s and strain γ s are assigned representative values of 0.3 C/m 2 and 0.004, respectively. Our previous experiments [Yoshida et al 2003;Shindo et al 2004; verified the accuracy of the above scheme, and showed that the results obtained are of general applicability. After polarization switching is predicted, J-integral paths are selected, which do not pass exactly through the singular point.…”

Section: Cracked Rectangular Piezoelectric Materialssupporting

confidence: 65%

Electroelastic intensification and domain switching near a plane strain crack in a rectangular piezoelectric material

Shindo

Narita

Saito

2007

JOMMS

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We study the effects of crack face boundary conditions and localized polarization switching on the piezoelectric fracture. This paper consists of two parts. In the first part, the electroelastic problem of an infinite piezoelectric material with a crack is formulated by means of integral transforms, and the exact solution is obtained. The electroelastic fields are expressed in closed form. The fracture mechanics parameters, such as energy release rate, are obtained for the permeable, impermeable and open crack models. In the second part, finite element analysis is carried out to study the crack behavior in a rectangular piezoelectric material by introducing a model for polarization switching in local areas of electroelastic field concentrations. A nonlinear behavior induced by localized polarization switching is observed between the fracture mechanics parameters and applied electric field.

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“…Since piezoelectric ceramics are ferroelectrics, polarization switching is induced by either mechanical stress or an electric field. The local electroelastic field is concentrated at the edge of an electrode; therefore, switching caused by concentrated fields can affect the fatigue damage of the piezoelectric body under cyclic field [2]. In order to simulate the switching initiation at the electrode edge, finite element method (FEM) analyses were carried out on two-dimensional model of specimen.…”

Section: Resultsmentioning

confidence: 99%

Electric Loading-Induced Cracking Behavior at Electrode Edges in PZT Ceramics

Kusukawa

Shiozaki

2007

KEM

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Abstract. Fatigue damage behavior under repeated electric loading was investigated on two kinds of PZT ceramics with discontinuous electrodes. Intergranular cracking was observed at the electrode edge in soft PZT under electric fields greater than ±400 V/mm. However, under the same loading conditions, no damage was observed in hard PZT. When cracking occurred, permittivity of specimens decreased with the number of cycles corresponding to the amount of mechanical damage. FEM analyses of the electroelastic field of the specimens showed that cracking due to cyclic electric loading was related to 180˚ domain switching caused by concentrated electroelastic field.

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Electroelastic field concentrations ahead of electrodes in multilayer piezoelectric actuators: experiment and finite element simulation

Cited by 85 publications

References 13 publications

Dynamic fatigue of cracked piezoelectric ceramics under electromechanical loading: three-point bending test and finite element analysis

Dynamic fatigue of cracked piezoelectric ceramics under electromechanical loading: three-point bending test and finite element analysis

Electroelastic intensification and domain switching near a plane strain crack in a rectangular piezoelectric material

Electric Loading-Induced Cracking Behavior at Electrode Edges in PZT Ceramics

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