Active control of cylindrical shell with magnetostrictive layer
TL;DR: In this article, the damping characteristics of a titanium shell with a magnetostrictive layer bonded to it were analyzed and a finite element formulation, physically consistent with the problem has been developed.
About: This article is published in Journal of Sound and Vibration.The article was published on 2003-05-01. It has received 26 citations till now. The article focuses on the topics: Shell (structure) & Solenoid.
Citations
More filters
TL;DR: In this article, a linear model of magnetostrictive actuators that is valid in a range of frequencies below 2 kHz is presented. And the model is validated through experimental tests carried out on two different magnetic actuators.
Abstract: One of the most frequent applications of magnetostrictive actuator technology is the active structural vibration control (AVC). Magnetostrictive actuators (MAs) can deliver high-output forces and can be driven at high frequencies. These characteristics make them suitable for a variety of vibration control applications. The use of this technology, however, requires an accurate knowledge of the dynamics of such actuators. Several models are available in the literature. However, their use in control applications, characterized by high dynamics, is often limited by nonlinearities and complexity of the model. To overcome this difficulty, the paper introduces a linear model of magnetostrictive actuators that is valid in a range of frequencies below 2 kHz. The assumptions supporting the linearity of the system are discussed and the theoretical model is presented. Finally the model is validated through experimental tests carried out on two different magnetostrictive actuators.
104 citations
Cites background from "Active control of cylindrical shell..."
...These characteristics make them suitble for a variety of vibration control applications such as vibrations ontrol of machine tools [1], of ship structures [2], of helicopter lades [3], of airplanes [4], of cylindrical [5] and linear [6] structures, f cables [7] and multi-dof systems [8]....
[...]
TL;DR: In this paper, the active vibration control of conical shells is studied using velocity feedback and linear quadratic regulator methods, and the results show that the active vibrational control of a conical shell can be improved by using a velocity feedback mechanism.
Abstract: In this paper, the active vibration control of conical shells is studied using velocity feedback and linear quadratic regulator methods. Up to now, many researches on the active vibration control o...
61 citations
Cites background from "Active control of cylindrical shell..."
...Many people have studied the problem of active vibration control in various kinds of engineering structures, such as the beams (Sun and Tong, 2004; Vasques and Rodriques, 2008), the plates (Carra et al., 2008) and the cylindrical shells (Kumar et al., 2003; Balamurugan and Narayanan, 2008)....
[...]
..., 2008) and the cylindrical shells (Kumar et al., 2003; Balamurugan and Narayanan, 2008)....
[...]
TL;DR: In this paper, a nonlinear finite element analysis of laminated composite shell structures with smart material laminae is presented, where a negative velocity feedback control is used with a constant control gain.
32 citations
TL;DR: In this article, the vibration suppression analysis of a simply-supported laminated composite beam with magnetostrictive layers resting on visco-Pasternak's foundation is presented, and the constant gain distributed controller of the velocity feedback is utilized for the purpose of vibration damping.
Abstract: The vibration suppression analysis of a simply-supported laminated composite beam with magnetostrictive layers resting on visco-Pasternak’s foundation is presented. The constant gain distributed controller of the velocity feedback is utilized for the purpose of vibration damping. The formulation of displacement field is proposed according to Euler-Bernoulli’s classical beam theory (ECBT), Timoshenko’s first-order beam theory (TFBT), Reddy’s third-order shear deformation beam theory, and the simple sinusoidal shear deformation beam theory. Hamilton’s principle is utilized to give the equations of motion and then to describe the vibration of the current beam. Based on Navier’s approach, the solution of the dynamic system is obtained. The effects of the material properties, the modes, the thickness ratios, the lamination schemes, the magnitudes of the feedback coefficient, the position of magnetostrictive layers at the structure, and the foundation modules are extensively studied and discussed.
25 citations
TL;DR: In this article, a functionally graded material (FGM) shell with mounted magnetostrictive layer under thermal vibration was studied by using the generalized differential qradrature (GDQ) method.
Abstract: The functionally graded material (FGM) shell with mounted magnetostrictive layer under thermal vibration was studied by using the generalized differential qradrature (GDQ) method. The FGM shell with/without negative velocity feedback of magnetostrictive position, with different power law index effects subjected to two edges lamped condition was analyzed. With velocity feedback and with suitable control gain value can reduce the amplitudes of displacement and shear stress into a smaller value. The magnetostrictive FGM shell is stable versus the Terfenol-D thickness for all values of FGM power law index. The magnetostrictive FGM shell can stand against the higher heating temperature of environment with some values of power law index.
21 citations
References
More filters
TL;DR: In this article, it was shown that hysteresis in the magnetostriction k is coupled to the hystresis of the magnetization M due to the dependence of the magnetic properties on the magnetisation.
Abstract: It is demonstrated that hysteresis in the magnetostriction k is coupled to hysteresis in the magnetization M because of the dependence of the magnetostriction on the magnetization. At the same time, when stress is present, the magnetization is in turn coupled to the behavior of the part of the magnetostriction associated with domain moment rotation. An expression for the magnetostriction is formulated, and numerical modeling results for magnetostriction hysteresis are compared to experimental results. Although some features of the magnetostriction in iron and steel still need additional explanation, the main features of the magnetostriction are accounted for. These include liftoff (failure of the magnetostriction to return to its value in the demagnetized state as the hysteresis loop is cycled) and a magnetostriction increase after flux density B reaches its maximum and starts to decrease. A macromagnetic, multidomain formulation that yields zero magnetostriction in the demagnetized specimen is used. >
371 citations
TL;DR: In this article, the Jiles-Atherton mean field theory for ferromagnetic hysteresis was combined with a quadratic moment rotation model for magnetostriction.
Abstract: This paper addresses the modeling of strains generated by magnetostrictive transducers in response to applied magnetic fields. The measured strains depend on both the rotation of moments within the material in response to the field and the elastic properties of the material. The magnetic behavior is characterized by considering the Jiles-Atherton mean field theory for ferromagnetic hysteresis in combination with a quadratic moment rotation model for magnetostriction. Elastic properties must be incorporated to account for the dynamics of the material as it vibrates. This is modeled by force balancing, which yields a wave equation with magnetostrictive inputs. The validity of the resulting transducer model is illustrated by comparison with experimental data.
214 citations
TL;DR: In this paper, a laminated composite beam, representative of a flexible beam, containing a layer of magnetostrictive material, is considered as a distributed parameter system and its dynamic behavior has been investigated.
84 citations
57 citations
55 citations