Numerical Analysis on Dynamic Characteristics of Flying Magnetic Head with Ultra Thin Spacing

2009 ◽  
pp. 171-174
Author(s):  
Yao Hua-ping ◽  
Huang Ping
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Magnetic Head

Numerical Analysis on Dynamic Characteristics of Flying Magnetic Head With Ultra Thin Spacing

2009 ◽  
Author(s):  
Hua-ping Yao ◽  
Yang-zhi Chen ◽  
Huang Ping
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Reynolds Equation ◽  
Abrupt Change ◽  
Magnetic Head ◽  
Modified Model ◽  
Pitch Direction ◽  
Harmonic Average ◽  
Bearing Number ◽  
Air Film

Numerical analysis of the dynamic characteristics of a magnetic head with ultra-thin spacing is presented. The dynamic response of the air film is analyzed with the momentum equations and the time-dependent modified Reynolds equation based on the FK-Boltzmann modified model. The pressure distribution is numerically calculated by using an up-wind scheme for a very large bearing number with the finite difference method, and a harmonic average method is used for calculating the flux factor with abrupt change of film thickness. Then, the dynamic characteristics are analyzed in time domain. The numerical results show that under an external motivation the significant vibration is produced in the height direction and in the pitch direction, but the slider is capable of returning to the equilibrium position very quickly.

Numerical Analysis on Dynamic Characteristics of Flying Magnetic Head Under Ultra Thin Spacing

2010 ◽  
Author(s):  
Hua-ping Yao ◽  
Huang Ping ◽  
Yang-zhi Chen
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Static Pressure ◽  
Abrupt Change ◽  
Air Bearing ◽  
Magnetic Head ◽  
Static Pressure Distribution ◽  
Stiffness And Damping Coefficient ◽  
Bearing Number ◽  
Stiffness And Damping

This paper presents numerical analysis of the dynamic characteristics of an air bearing system of a magnetic head under ultra-thin spacing. First, the static pressure distribution is numerically calculated by using up-wind scheme for a very large bearing number and a harmonic algorithm to calculate the flux factor for the abrupt change of film thickness. Then, the dynamic characteristics are analyzed in frequency domain by a perturbation method and finite difference method. The varying tendencies of the stiffness and damping coefficient in the translation, pitch and rolling directions with the frequency and the minimum film height are obtained.

Dynamic characteristics of a magnetic head slider

1985 ◽  
Vol 21 (5) ◽  
pp. 1509-1511 ◽  
Author(s):  
Y. Mizoshita ◽  
K. Aruga ◽  
T. Yamada
Keyword(s):  
Dynamic Characteristics ◽  
Magnetic Head ◽  
Head Slider

scholarly journals Numerical Analysis of the Dynamic Characteristics of a Balanced Piston Type Relief Valve. 2nd Report. Stability of a Relief Valve.

1997 ◽  
Vol 28 (2) ◽  
pp. 239-244
Author(s):  
Satoru HAYASHI ◽  
Yuji IIZUKA ◽  
Ikuro IIMURA ◽  
Toshiyuki HAYASE
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Relief Valve

Shaking Table Test Study of Reinforced Concrete Shear Wall Structure

2017 ◽  
Vol 865 ◽  
pp. 306-312
Author(s):  
Zheng Li ◽  
Heng Zhou ◽  
Li Qin
Keyword(s):  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Shaking Table Test ◽  
Time History ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Model Structure ◽  
Fixed Base ◽  
Time History Response

A reduced-scale model of 7-story reinforced concrete shear wall structure is made. Shaking-table test of the model is carried out. Two test conditions are considered. In the first condition, fixed base is used. In another condition, soil structure interaction is considered. According to the experimental results, the dynamic characteristic and seismic performance of shear wall structure is studied. The acceleration time history response of model structure is obtained. Based on the time-history response, the dynamic characteristics of model structure are studied by spectrum analysis. The Finite Element Model of actural structure is established by ANSYS. The dynamic characteristics and seismic performance of actural structure are studied. By comparing the experiment results and numerical analysis results under the fixed-base condition, the rationality of the ANSYS model and numerical analysis method of are verified.

Numerical Analysis for Dynamic Characteristics of New Launcher with Coupled Rigid and Flexible Motion

2010 ◽  
Vol 34-35 ◽  
pp. 44-49 ◽  
Author(s):  
Ying Ze Wang
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
High Performance ◽  
Coupling Effect ◽  
The Other ◽  
Flexible Coupling ◽  
Simulation Based ◽  
Coupling Dynamic ◽  
Coupling Dynamic Model

This paper is concerned with an analysis of the dynamic characteristics of the high performance launcher—rarefaction wave gun(RAVEN) by numerical simulation. Based on its launch mechanism and launch structure, a rigid-flexible coupling dynamic model which considered the coupling effect between the flexible virbation of the launch barrel and the motion behaviors of the other parts of the RAVEN is established via a subsystems method. The actual motion of the projectile and inertial breech during the lauching are described by the interior ballistic equations of the RAVEN. The dynamic characterisitcs of RAVEN is illustrated by the numerical simulation about a small caliber launcher, and the interaction between launch barrel and the other parts is also studied.

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