Effect of imperfect bonding on the dynamic response of a pre-stressed sandwich plate-strip with elastic layers and a piezoelectric core

Daşdemir, Ahmet

doi:10.1016/j.camss.2017.10.005

Cited by 12 publications

(19 citation statements)

References 11 publications

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“…Further, the underlined term above emphasizes the corresponding component related to one surface of the interfaces. Considering the statement "δL ¼ 0," which is the first variation of the functional in equation (20), with the constitutive relationships in equations (1) and (2), we obtain the equations of motion in equations ( 6) and ( 7) and the boundary-contact conditions in equations ( 8)- (12), and equations ( 15)- (17); this proves the validity of the proposed functional in (20).…”

Section: Solution Proceduressupporting

confidence: 52%

“…For example, the notation σ ½1 22 h=p 0 indicates numerical results obtained for the situation wherein the piezoelectric core is polled in the direction of the Ox 1 À axis. Throughout the paper, all the numerical investigations are conducted on the interface plane between the plate-strip and rigid foundation under 17 Here, ν ðmÞ is the Poisson's ratio of the mth elastic layer.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…16 Das ¸demir presented a mathematical model to investigate the dynamical behavior of a pre-stressed sandwich plate-strip with a piezoelectric core and elastic faces for the case wherein there exists shear spring-type imperfect contact interactions at the interfaces between the layers. 17 Guha et al considered reflection and refraction characteristics of the wave propagation at the interfaces under various imperfect assumptions. 18 Anh et al presented an analytical treatment on the propagation of Stoneley waves for evaluating the quality of imperfect interfaces.…”

Section: Introductionmentioning

confidence: 99%

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Effects of poling direction and imperfection of interfaces on a pre-stressed system with a piezoelectric core bonded to elastic faces

Daşdemir

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper models the resonance behavior of an initially stressed sandwich plate-strip consisting of a piezoelectric core and elastic faces, based on a rigid foundation, exposed to a time-harmonic force. Our research is conducted according to the linearized theory of electro-elasticity for solids under initial stress. This model assumes that there is a spring-type imperfectness at interfaces between the piezoelectric core and the face materials, both in the normal and tangential directions, and the core layer is poling in various directions. A mathematical model is created for the current problem, and then the finite element method (FEM) is used to solve it. Further, attention is focused on the influence of the mentioned imperfectness and the poling directions on the frequency response of plate-strip, in addition to the effects of the most important parameters on this response. The results show that as the imperfectness at the interface planes has the greatest effect on the horizontal polarization of the piezoelectric core, the mentioned polling direction inhibits the resonance mode of the system.

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Section: Solution Proceduressupporting

confidence: 52%

Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of poling direction and imperfection of interfaces on a pre-stressed system with a piezoelectric core bonded to elastic faces

Daşdemir

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In particular, for structures with complex stress and strain conditions that are difficult to solve with analytical methods, the finite element method is a better choice [31,32]. Using the characteristics of standardization and normalization, the finite element method turns the large-scale analysis and calculation of complex engineering problems into reality [33,34].…”

Section: Piezoelectric Component Dynamic Equationmentioning

confidence: 99%

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

et al. 2022

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A new type of actuator is presented in the paper that integrates the IDEs into a conventional piezoelectric sheet. The electrodes and polarization play a key role in the strain. Adopting constitutive equations of piezoelectric theory and variation principles in elasticity theory, the piezoelectric component dynamic equation was deduced. Several finite element models of the IDEs piezoelectric actuator were established in ANSYS. The effect of branch electrodes on the strain of the actuator was analyzed. The results show that the strain can be bigger than that of the conventional piezoelectric sheet by decreasing the gap and increasing the width of electrodes. According to the FEM result, some IDEs piezoelectric actuators were prepared. The distribution of the static electric field inside the actuator was researched to determine the polarization voltage. The 2671 high voltage power and DU-20 temperature-controlled oil bath was applied to explore the polarization process. The effect of the voltage, time and temperature on the strain of the actuator was researched by a TF2000 and SIOS laser interferometer. The results show that the optimum polarization is 800 V, for 60 min and at 150 ℃. The strain of the IDEs piezoelectric actuator is 1.87 times that of the conventional piezoelectric actuator. The actuators could prove to be helpful applications for micro-nano devices.

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“…Singh et al (2017) investigated analytically effects of imperfect bonded piezoelectric layer on the propagation of love-type wave. Daşdemir (2017) constructed a mathematical model of imperfect bonding of a sandwich plate with piezoelectric middle layer to evaluate the dynamic response. The model was developed by FEM.…”

Section: Introductionmentioning

confidence: 99%

Effects of viscoelastic bonding layer on performance of piezoelectric actuator attached to elastic structure

Ali

Alazwari

Eltaher

et al. 2022

Mater. Res. Express

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In the context of the finite elements analysis, the mechanical performance of viscoelastically bonded smart structures is investigated and analyzed. Three different models are considered and compared. In the 1st model, the actuator is glued to the host structure. On the other hand, in the two other models the actuator is glued to the bonding layer which is glued to the host structures. To explore the effect of the bonding layer characteristics on the mechanical behavior of the host structure, both elastic and viscoelastic layers are considered. The Prony’s series are utilized to simulate the viscoelastic constitutive response. The mathematical formulation of the coupled problem is presented and the dynamic finite elements equations of motion of the coupled electromechanical systems are introduced. The proposed methodology is verified by comparing the obtained results with the available results in the literature and good consentience is observed. Both static and dynamic vibration behaviors are studied incorporating the interfacial shear stresses between the bonding layer and the host structure as well as the displacements as a comparison criterion to determine the performance controlling function of the host structure. Parametric study of piezoelectric properties showed that permittivity is required in solving such systems but does not affect the performance. On the other hand, the piezoelectric characteristics have significant effects on the mechanical performance of smart structures and can be used in the optimum selection of combination just like mechanical properties and geometry. Additionally, the obtained results show that the model with viscoelastic bonding layer has an overall static performance nearly half of elastic bonding layer model while it has a slight effect on the dynamic behavior compared with the corresponding elastic bonding layer. The proposed methodology with the obtained results is supportive in the applications of structure health monitoring and dynamics of smart structural systems. The proposed procedure could be extended in a future work to include the coupled electromagnetic effects on the dynamic behavior of smart structures in hygrothermal environment

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Effect of imperfect bonding on the dynamic response of a pre-stressed sandwich plate-strip with elastic layers and a piezoelectric core

Cited by 12 publications

References 11 publications

Effects of poling direction and imperfection of interfaces on a pre-stressed system with a piezoelectric core bonded to elastic faces

Effects of poling direction and imperfection of interfaces on a pre-stressed system with a piezoelectric core bonded to elastic faces

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

Effects of viscoelastic bonding layer on performance of piezoelectric actuator attached to elastic structure

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