Numerical modeling of a damaged plate with piezoelectric actuation

Li, Y. Y.; Li, Cheng; Yam, L.H.; Yan, Yi

doi:10.1088/0964-1726/12/4/303

Cited by 9 publications

(3 citation statements)

References 26 publications

(24 reference statements)

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“…The frequency characteristic change of structure was also studied as an index of crack detection. Other studies included the numerical modelling of a damaged plate with piezoelectric actuator [11], the repair of a cracked beam with a piezoelectric patch [12]. Sinha et al [13] modelled the cracks by considering the change in the local flexibility in the vicinity of cracks and the presence of a crack was detected by the variations of the natural frequencies, which however are very small as shown in section 4.1.…”

Section: Introductionmentioning

confidence: 99%

Dynamics and vibrations of structures with bonded piezoelectric strips subjected to mechanical and unsteady aerodynamic loads

Mateescu

Han

Misra

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

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This article presents an analysis of the dynamics of damaged structures with bonded piezoelectric strips executing flexural oscillations generated by mechanical loads, piezoelectric actuators or unsteady aerodynamic loads. These oscillations can be used to detect the presence of cracks for structural health monitoring. The proposed method of crack detection uses pairs of piezoelectric strip sensors bonded on the opposite sides of the structure and is based on the fact that the presence of a crack causes a difference between the strains measured by the two sensors of a pair. The structural analysis presented in this article uses a non-linear model for the cracks and a finite-element formulation for the piezoelectric strips coupled with the structure. A panel method is used to determine the unsteady aerodynamic loads acting on the oscillating wing structure. This study includes the dynamic analysis in the frequency domain of a cracked plate undergoing forced flexural vibrations in a range of frequencies generated by a pair of piezoelectric actuators. The dynamic analysis in the time domain is also performed for the oscillating structures with piezoelectric strips subjected to mechanical or unsteady aerodynamic loads. It was found that this method is quite effective in detecting cracks in the wing structures subjected to oscillatory aerodynamic loads.

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Section: Introductionmentioning

confidence: 99%

Dynamics and vibrations of structures with bonded piezoelectric strips subjected to mechanical and unsteady aerodynamic loads

Mateescu

Han

Misra

2010

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In the late 1990s, studies have been made on smart piezoelectric beams to address debonding issues on static and dynamic characteristics [6,7]. Actually in recent years, delamination modelling has once again got a lot of encouragement due to structural health monitoring and very significant progress is already made in this direction [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Active vibration control of smart plates with partially debonded multilayered PZT actuators

Kumar

Raja

Ikeda

2007

Smart Mater. Struct.

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The influence of actuator damage on the performance of closed loop vibration control is numerically evaluated. Debonding is considered a damage mode and finite element procedures are subsequently developed to introduce its effect on system matrices, namely elastic and electro-elastic stiffness. A simple modelling scheme for multiple debonding is proposed, which can also idealize multiple delamination in the host laminate. Debonding in actuators in general has reduced their load carrying appreciably as well as vibration control characteristics. Therefore, incorporating such a damage mode in the control design as an uncertainty parameter would help to realize a damage-tolerant active vibration control system. It is interesting to note that debonding in actuators has influenced both active damping and active stiffening effects.

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“…Carrion et al [2] developed a subdomain inverse method, applying the wave propagation analysis for the identification of damage response vectors in vibrating structures. Li et al [9] studied the effect of delamination using the change in energy index of the system. The energy index was observed to be more sensitive than the frequency index to damage.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Piezoelectric Composite Beams and Plates with Multiple Delaminations

Raja

Adya

Viswanath

2006

Structural Health Monitoring

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In the present work, the effect of delamination or debonding on the static and dynamic characteristics of laminated piezoelectric beams and plates is studied. A four-noded quadrilateral shear flexible plate element is developed to model the damages in composite substrate and in piezoelectric layers. The elastic stiffness and electro-elastic stiffness degradations are introduced at the elemental level through coupled constitutive relations. The undamaged structure is modeled as a single laminate while the delaminated region is modeled as sublaminates whose interface contains the desired delamination or debonding. The continuity of displacement is maintained across the delaminated edge by imposing the strain-based multipoint constraints. Numerical studies are conducted on composite specimens with surface bonded active layers. The results are presented to evaluate the performance of these smart structures in the presence of delamination. For actuators, the performance is measured in terms of the achievable deflection control and in sensors as a measurable output voltage.It is observed that actuator and sensor debonding degrade the capabilities of active materials significantly. Therefore, the study concludes that a damage tolerant approach is essential for the design of smart structural systems to account for damage-induced uncertainty in the functional properties of smart actuators and sensors.

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Numerical modeling of a damaged plate with piezoelectric actuation

Cited by 9 publications

References 26 publications

Dynamics and vibrations of structures with bonded piezoelectric strips subjected to mechanical and unsteady aerodynamic loads

Dynamics and vibrations of structures with bonded piezoelectric strips subjected to mechanical and unsteady aerodynamic loads

Active vibration control of smart plates with partially debonded multilayered PZT actuators

Analysis of Piezoelectric Composite Beams and Plates with Multiple Delaminations

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