Vibration attenuation and shape control of surface mounted, embedded smart beam

Rathi, Vivek; Khan, Arshad

doi:10.1590/s1679-78252012000300006

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…The lead zirconate titanate (PZT) layer acts as both actuator and sensor in thickness shear actuation mode. The foam and PZT together behave like a core element to obtain embedded beam model [28].…”

Section: Finite Element Modeling Of An Embedded Beammentioning

confidence: 99%

“…It is obvious from previous works that the control is more persuasive at the root with the sensor output voltage is significantly more due to the substantial dispensation of the bending moment near the firm end for the rudimentary mode, thus provoking a stupendous strain rate and the susceptibility of the sensor/actuator duo rely on its placement in the beam and the vibration attributes of the system precarious on collocation of the piezo pair and also on some other numerous facet viz. the gain of amplifier employed, the mode number and the placement of piezo patches at the nodal points from fixed end [28]. Modelling a smart structure inclusive of sensor/actuator mass and stiffness and by altering its orientation in the beam from the free end to the fixed end acquaint an ample modification in the system's structural response attributes.…”

Section: Simulation For Controllers For Smart Beams With Mimo Using Ementioning

confidence: 99%

“…Donthireddy and Chandrashekhara [27] have proposed a model with embedded piezoelectric components. Rathi and Khan [28] have modeled a smart cantilever beam with surface mounted and embedded shear sensors and actuators on the basis of TBT and justify that embedded components of flexible structures provide better control than surface mounted arrangement and also emphasized on optimal location of sensors and actuators in embedded beam.…”

Section: Introductionmentioning

confidence: 99%

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Vibration Annihilation of Sandwiched Beam with MROF DTSMC

Rathi¹,

Khan²

2017

ENG

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In the present paper, an analytical model of a flexible beam fixed at an end with embedded shear sensors and actuators is developed. The smart cantilever beam model is evolved using a piezoelectric sandwich beam element, which accommodates sensor and actuator embedded at distinct locations and a regular sandwiched beam element, having rigid foam at the core. A FE model of a piezoelectric sandwich beam is evolved using laminated beam theory in MATLAB®. Each layer behaves as a Timoshenko beam and the cross-section of the beam remains plane and rotates about the neutral axis of the beam, but it does not remain normal to the deformed longitudinal axis. Keeping the sensor and actuator location fixed in a MIMO system, state space models of the smart cantilever beam is obtained. The proper selection of control strategy is very crucial in order to obtain the better control. In this paper a DSM controller designed to control the first three modes of vibration of the smart cantilever beam and their performances are represented on the basis of control signal input, sensor output and sliding functions. It is found that DSM controller provides superior control than other conventional controllers and also MROF DSM controller is much better than SISO DSM controller.

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Section: Finite Element Modeling Of An Embedded Beammentioning

confidence: 99%

Section: Simulation For Controllers For Smart Beams With Mimo Using Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vibration Annihilation of Sandwiched Beam with MROF DTSMC

Rathi¹,

Khan²

2017

ENG

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“…Rahman and Alam (2012) investigated the vibration suppression of smart cantilever beams which consists of a beam as the host structure and piezoceramic patches as the actuation and sensing elements. Rathi and Khan (2012) used active vibration control and smart structure to reduce the vibration of a system by automatic modification of the system structural response.…”

Section: Introductionmentioning

confidence: 99%

Vibration suppression of a rotating flexible cantilever pipe conveying fluid using piezoelectric layers

Khajehpour

Azadi

2015

Lat. Am. j. solids struct.

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In this study, the governing equations of a rotating cantilever pipe conveying fluid are derived and the longitudinal and lateral induced vibrations are controlled. The pipe considered as an Euler Bernoulli beam with tip mass which piezoelectric layers attached both side of it as sensors and actuators. The follower force due to the fluid discharge causes both conservative and non-conservative work. For mathematical modeling, the Lagrange-Rayleigh-Ritz technique is utilized. An adaptive-robust control scheme is applied to suppress the vibration of the pipe. The adaptive-robust control method is robust against parameter uncertainties and disturbances. Finally, the system is simulated and the effects of varying parameters are studied. The simulation results show the excellent performance of the controller.

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“…Donthireddy and Chandrashekhara (1996) used layerwise theory with constant through-thickness transverse deflection for parametric study of laminated beams with piezoelectric actuators. First-order Shear Deformation Theory (FSDT) based analytical closed form solutions given by Abramovich (1998), Sun and Huang (2000) and finite elements proposed by Shen (1995), Narayanan and Balamurugan (2003), Neto et al (2009), Rathi andKhan (2012) can be used for static and dynamic analyses of surface mounted extension mode smart beams. ESL-FSDT and Higher-order Shear Deformation Theory (HSDT) based analytical solutions have been proposed by Aldraihem and Khdeir (2000) and Khdeir and Aldraihem (2001) for actuation of these extension mode beams.…”

Section: Introductionmentioning

confidence: 99%

An accurate novel coupled field Timoshenko piezoelectric beam finite element with induced potential effects

Sulbhewar

Raveendranath

2014

Lat. Am. j. solids struct.

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An accurate coupled field piezoelectric beam finite element formulation is presented. The formulation is based on First-order Shear Deformation Theory (FSDT) with layerwise electric potential. An appropriate through-thickness electric potential distribution is derived using electrostatic equilibrium equations, unlike conventional FSDT based formulations which use assumed independent layerwise linear potential distribution. The derived quadratic potential consists of a coupled term which takes care of induced potential and the associated change in stiffness, without bringing in any additional electrical degrees of freedom. It is shown that the effects of induced potential are significant when piezoelectric material dominates the structure configuration. The accurate results as predicted by a refined 2D simulation are achieved with only single layer modeling of piezolayer by present formulation. It is shown that the conventional formulations require sublayers in modeling, to reproduce the results of similar accuracy. Sublayers add additional degrees of freedom in the conventional formulations and hence increase computational cost. The accuracy of the present formulation has been verified by comparing results obtained from numerical simulation of test problems with those obtained by conventional formulations with sublayers and ANSYS 2D simulations.

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Vibration attenuation and shape control of surface mounted, embedded smart beam

Cited by 9 publications

References 16 publications

Vibration Annihilation of Sandwiched Beam with MROF DTSMC

Vibration Annihilation of Sandwiched Beam with MROF DTSMC

Vibration suppression of a rotating flexible cantilever pipe conveying fluid using piezoelectric layers

An accurate novel coupled field Timoshenko piezoelectric beam finite element with induced potential effects

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