نتایج جستجو برای: Magnetostrictive layers

تعداد نتایج: 104377  

A. Darvizeh M. Darvizeh, R. Ansari, R. Rajabieh Fard

In the present work, FGM shells integrated with magnetostrictive layers acting as distributed sensors and actuators are modeled to control vibration attenuation of FGM shells with simply supported boundaryconditions. To achieve a mechanism for actively control of the oscillation amplitude of the integrated structure, a negative velocity proportional feedback control law is implemented in the st...

Journal: :J. Comput. Meth. in Science and Engineering 2006
Sultan Aljahdali Syed J. Hyder

Constitutive equations of magnetostrictive smart materials involving mechanical and magnetic fields are presented via Hamilton’s principle. Finite element equations are used to solve the equations of motion subjected to different force inputs. Magnetostrictive (CoFe2O4) layers mounted on the root of cantilever beam is considered as the case study to obtain the displacement and magnetic response...

This paper presents the analysis of vibration control of a laminated composite beam that including magnetostrictive layers. The formulation of problem is presented based on the shear deformation beam theory. For vibration suppression, the velocity feedback control with constant gain distributed is considered. Navier's method is applied to analyze the solution of vibration suppression of laminat...

1993
H. S. Tzou W. K. Chai M. Hanson

Smart adaptive structures and structronic systems have been increasingly investigated and developed in the last two decades. Although smart structures made of piezoelectrics, shape-memory materials, electrostrictive materials, and electro-/magnetorheological fluids have been evaluated extensively, studies of magnetostrictive continua, especially generic mathematical model(s), are still relative...

Journal: :Journal of Sensors 2022

To progress the proficiency and broaden action bandwidth of vibration energy harvesters, this paper presents a cantilever piezoelectric-magnetostrictive bistable hybrid harvester with dynamic magnifier. The energy-harvesting system comprises two degrees freedom electrical freedom. It consists composite beam made three layers, in which magnetostrictive piezoelectric layers are attached to top bo...

2001
E. Hristoforou K. Kosmas

A miniaturized arrangement based on magnetostrictive delay line (MDL) mechanism, able to be used as sensor, is realized using thin films technology. In order to obtain high-performance miniaturized magnetostrictive delay line arrangement we used Fe, Ni and Fe70B20Si6C4 amorphous thin films as magnetostrictive sensing element because of their better magnetic and magnetoelastic characteristics th...

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