Vibration control of an HDD disk-spindle system utilizing piezoelectric bimorph shunt damping: I. Dynamic analysis and modeling of the shunted drive

2007 ◽  
Vol 16 (3) ◽  
pp. 891-900 ◽  
Author(s):  
S C Lim ◽  
S B Choi
Keyword(s):  
Dynamic Analysis ◽  
Vibration Control ◽  
Piezoelectric Bimorph ◽  
Spindle System ◽  
Shunt Damping

Reduction of structural vibrations with the piezoelectric stacks ring

2020 ◽  
Vol 64 (1-4) ◽  
pp. 729-736
Author(s):  
Jincheng He ◽  
Xing Tan ◽  
Wang Tao ◽  
Xinhai Wu ◽  
Huan He ◽  
...  
Keyword(s):  
Vibration Control ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Structural Vibrations ◽  
Rotor Systems ◽  
Fea Model ◽  
Piezoelectric Stacks ◽  
Shunt Damping ◽  
Reduction Effect ◽  
Euler Bernoulli Beam

It is known that piezoelectric material shunted with external circuits can convert mechanical energy to electrical energy, which is so called piezoelectric shunt damping technology. In this paper, a piezoelectric stacks ring (PSR) is designed for vibration control of beams and rotor systems. A relative simple electromechanical model of an Euler Bernoulli beam supported by two piezoelectric stacks shunted with resonant RL circuits is established. The equation of motion of such simplified system has been derived using Hamilton’s principle. A more realistic FEA model is developed. The numerical analysis is carried out using COMSOL® and the simulation results show a significant reduction of vibration amplitude at the specific natural frequencies. Using finite element method, the influence of circuit parameters on lateral vibration control is discussed. A preliminary experiment of a prototype PSR verifies the PSR’s vibration reduction effect.

Dynamic Analysis of a High-Speed Grinding Spindle

2011 ◽  
Vol 215 ◽  
pp. 89-94 ◽  
Author(s):  
Jing Zhu Pang ◽  
Bei Zhi Li ◽  
Jian Guo Yang ◽  
Zhou Ping Wu
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
High Speed ◽  
Grinding Wheel ◽  
Static Characteristics ◽  
Motorized Spindle ◽  
Element Analysis ◽  
Spindle System ◽  
The Finite Element Analysis ◽  
High Speed Grinding

This paper presents the effects of spindle system configuration on the dynamic and static characteristics of high speed grinding. A 3D physical mode of high-speed grinding motorized spindle system with rotation speed of 150m/s was provided. The motorized spindle system consists of bearings, rotor, stator, spindle housing and grinding wheel. Based on the finite element method (FEM), the static characteristics, dynamic and the transient response are analyzed based on the finite element analysis software NASTRAN. It is shown that the spindle overhanging, bearing span have a significant effort on spindle deflection. The dynamic analysis shows no resonance will happen during its speed range. The methods and solutions for the motorized spindle system design and engineering applications was given in this paper.

Vibration Control of Flexible Multibody Aircraft During Touchdown Impacts

1987 ◽  
Vol 109 (3) ◽  
pp. 270-276 ◽  
Author(s):  
A. A. Shabana ◽  
R. D. Patel ◽  
A. DebChaudhury ◽  
R. Ilankamban
Keyword(s):  
Dynamic Analysis ◽  
Vibration Control ◽  
Random Process ◽  
Large Scale ◽  
Passive Control ◽  
Multibody System ◽  
General Purpose ◽  
Flexible Multibody ◽  
General Purpose Computer ◽  
Purpose Computer

A method is presented for the dynamic analysis and vibration control of large scale flexible multibody aircraft during the touchdown impacts and rollover motion. The rollover motion is simulated by modeling the uneven runway profile as a stationary zero mean space dependent random process defined by its spectral shape. The prescribed motions at the two landing gears will then represent a different time dependent random process with spectral shapes changing with the change in velocity of the aircraft. Composite materials which provide higher stiffness-to-weight ratios are used as a passive control system to reduce the aircraft vibration. The results of the numerical example presented showed that the use of composites can have a significant effect on attenuating the vibration of the aircraft during the touchdown impact and rollover motion. The numerical results are obtained using the general purpose computer program DAMS (Dynamic Analysis of Multibody System).

Dynamic Analysis in Grinding Head of Roller Grinding Machine

2013 ◽  
Vol 694-697 ◽  
pp. 259-262
Author(s):  
Jin Ling Cao ◽  
Ying Luo
Keyword(s):  
Dynamic Analysis ◽  
Modal Analysis ◽  
Natural Frequency ◽  
Transfer Matrix ◽  
System Dynamic ◽  
Dynamic Design ◽  
Spindle System ◽  
Harmonic Response ◽  
Vibration Resistance ◽  
Grinding Machine

In the article, the vibration resistance of spindle system in grinding head of roller grinding machine is studied by means of harmonic response and modal analysis, by using the method of the transfer matrix, obtained the first five orders of the natural frequency of spindle system. By studying the M84100A type spindle system in grinding head of roller grinding machine, obtained the conclusion that the natural frequency was far from the work frequency, so laid a foundation of the spindle system dynamic design.

Dynamic analysis of a disk-spindle system in a hard disk drive

2003 ◽  
Vol 39 (2) ◽  
pp. 784-789 ◽  
Author(s):  
T. Hasegawa ◽  
Hongbing Du ◽  
H. Osawa ◽  
H. Nishimura ◽  
T. Oe
Keyword(s):  
Dynamic Analysis ◽  
Hard Disk Drive ◽  
Hard Disk ◽  
Disk Drive ◽  
Spindle System
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