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

Abstract

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

Performance Evaluation of Nonlinear Viscoelastic Materials using Finite Element Method

“…Many researchers [20][21][22][23][24][25] applied the finite element analysis to achieve different analyses about the viscoelastic behavior in different topics such as the dynamic response of orthotropic viscoelastic composite laminates plate, impact response of viscoelastic-frictionless bodies, Dynamic response of viscoelastic functionally graded porous thick beam and the analysis of viscoelastic bonding layer on the behavior of piezoelectric actuator.…”

Enhancing aircraft crack repair efficiency through novel optimization of piezoelectric actuator parameters: A design of experiments and adaptive neuro-fuzzy inference system approach

“…At the same time, concrete beams have been used for damage evaluation in reinforced concrete structures with lap splices of tensional steel bars [ 32 ]. Additionally, the effectiveness of PZT actuators has been examined when combined with viscoelastic bonding layers on elastic structures [ 33 ]. In some cases, researchers have evaluated the performance of surface-bonded piezoelectric sensors and actuators on host structures, considering factors such as adhesive layer effects and non-uniform thickness, through FE simulations [ 34 ].…”

Analysis of damage control of thin plate with piezoelectric actuators using finite element and machine learning approach

“…In the latest studies, piezoelectric materials adhesively bonded to structures were also found in some other cases such as in composite patches [26] which is used to evaluate the vibration excitation and separation in laminates and concrete beams which is used for damage evaluation of reinforced concrete structures at lap splices of tensional steel bars [27]. Additionally, the performance of PZT actuators was found in the effects of a viscoelastic bonding layer bonded to an elastic structure [28]. In some cases, surface-bonded piezoelectric sensors and actuators' performance on the host structures has been evaluated for PZT itself using FE simulations to check the adhesive layer effects, including non-uniform thickness [29].…”