Semi-Active Vibration Control for Wing Aileron Using Stepped Magneto-Rheological Damper

2005 ◽  
Vol 6 (1) ◽  
Author(s):  
Wei Sun ◽  
Haiyan Hu
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Active Vibration ◽  
Magneto Rheological

SEMI-ACTIVE VIBRATION CONTROL OF A ROTATING SHAFT BY USING A MAGNETO RHEOLOGICAL DAMPER

2015 ◽  
Author(s):  
Aldemir Ap Cavalini Jr ◽  
Edson Hideki Koroishi ◽  
Adriano Silva Borges ◽  
Luiz Gustavo Pereira ◽  
Valder Steffen Jr
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Rotating Shaft ◽  
Active Vibration ◽  
Magneto Rheological

An Experimental Study on Basic Characteristics of a Magneto-Rheological Grease Damper

2015 ◽  
Author(s):  
Yusuke Sato ◽  
Hiroshi Sodeyama ◽  
Makoto Hayama ◽  
Shin Morishita
Keyword(s):  
Vibration Control ◽  
Dispersion Medium ◽  
Fine Particles ◽  
Active Vibration Control ◽  
Test Results ◽  
Active Vibration ◽  
Derived Design ◽  
Basic Characteristics ◽  
Fluid Dampers ◽  
Magneto Rheological

As one of the semi-active vibration control devices for mechanical or civil structures, magneto-rheological fluid dampers have been enthusiastically studied and developed since the 1990s. A new magneto-rheological material for such dampers has been developed to provide a practical solution to the significant common drawback of sedimentation of ferromagnetic fine particles in the fluid. Industrial grease is used as the dispersion medium in this material. The thickener to be added in the grease to control the rheological properties seems to prevent separation of the particles from the dispersion medium. Several performance tests were carried out with a proto-type of the damper with the newly developed magneto-rheological grease, namely, the magneto-rheological grease damper. Based on the test results, the energy dissipation capabilities of the damper and the basic characteristics of the magneto-rheological grease were verified to provide semi-active vibration control. Moreover, the analytically-derived design formulae for the damper were improved on the basis of the test results.

MRE-Based Adaptive-Tuned Dynamic Absorber With Self-Sensing Function for Vibration Control of Structures

2014 ◽  
Author(s):  
Toshihiko Komatsuzaki ◽  
Toshio Inoue ◽  
Yoshio Iwata
Keyword(s):  
Vibration Control ◽  
Smart Materials ◽  
Active Vibration Control ◽  
Dominant Frequency ◽  
Displacement Sensor ◽  
Dynamic Vibration Absorber ◽  
Active Vibration ◽  
Dynamic Absorber ◽  
Magneto Rheological ◽  
Strain Signal

Magneto-rheological elastomer (MRE) is known as class of smart materials whose elastic property can be varied by the applied external magnetic field. For the use of semi-active vibration control, any kind of external sensor such as accelerometer or displacement sensor is usually used to monitor the real-time response of structures while leaving cost, proper installation and maintenance problems for real applications. In addition to the field-dependent stiffness change property of MRE, the electrical resistance of the composite is also changed by the induced strain within the elastomer providing a new self-sensing feature as a multifunctional material. In the present study, a novel dynamic vibration absorber having self-sensing function and adaptability using Magneto-rheological elastomer is developed. The natural frequency of the absorber is instantaneously tuned to a dominant frequency extracted from the strain signal. The damping performance of the absorber is investigated by applying the absorber to a fundamental base-excited 1-dof vibration system. Investigations show that the vibration of the target structure exposed to a non-stationary disturbance can be satisfactorily reduced by the proposed frequency-tunable dynamic absorber without the use of an external sensor, at the exceeding performance in comparison to conventional passive-type dynamic absorber.

scholarly journals Semi-active vibration control of horizontal seat suspension by using magneto-rheological damper

2019 ◽  
Vol 57 (2) ◽  
pp. 411-420 ◽  
Author(s):  
Igor Maciejewski ◽  
Tomasz Krzyżyński ◽  
Sebastian Pecolt ◽  
Sebastian Chamera
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Seat Suspension ◽  
Active Vibration ◽  
Magneto Rheological
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