Results 211 to 220 of about 21,652 (255)

Method for protecting a flexible record disc and disc so protected

The Journal of the Acoustical Society of America, 1980
A flexible record disc engraved in the form of impressions along a track located in a ring-shaped zone is protected with a second flexible disc adhering at its central portion to the non-engraved part of the record disc. In the case where read-out is carried out on a stabilizing air cushion, the air remaining between the two discs is displaced by ...
Claude Bricot, Bernard Carre, Jean Claude Lehureau, Claude Peuch   +3 more
openaire   +1 more source

Modal interactions in a rotating flexible disc

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2008
This article presents a dynamic investigation on the modal interactions in a rotating flexible disc. The governing equation of the rotating flexible disc is modelled by both considering the disc as a von Kármán plate and including the initial transverse runout of the disc.
Yong-Chen Pei, Qing-Chang Tan
openaire   +1 more source

The relationship between disc degeneration and flexibility of the lumbar spine

The Spine Journal, 2001
A relationship between degenerative changes of the intervertebral disc and biomechanical functions of the lumbar spine has been suggested. However, the exact relationship between the grade of disc degeneration and the flexibility of the motion segment is not known.To investigate the relationship between degenerative grades of the intervertebral disc ...
N, Tanaka, H S, An, T H, Lim, A, Fujiwara, C H, Jeon, V M, Haughton   +5 more
openaire   +2 more sources

Disc Degeneration Affects the Multidirectional Flexibility of the Lumbar Spine

Spine, 1994
An in vitro biomechanical investigation using human lumbar cadaveric spine specimens was undertaken to determine any relationship between intervertebral disc degeneration and nonlinear multidirectional spinal flexibility.Previous clinical and biomechanical studies have not established conclusively such a relationship.Forty-seven discs from 12 whole ...
M, Mimura, M M, Panjabi, T R, Oxland, J J, Crisco, I, Yamamoto, A, Vasavada   +5 more
openaire   +2 more sources

Coupling effects of disc flexibility on the dynamic behaviour of multi disc-shaft systems

Journal of Sound and Vibration, 1987
The dynamic behaviour of a rotor consisting of multidiscs on a solid or hollow shaft, as used in gas or steam turbines, is considered. The effect of shaft flexibility on the dynamic characteristics of the discs and the coupling effects between the shaft and disc modes are investigated.
A.A.S. Shahab, J. Thomas
openaire   +1 more source

Perpendicular magnetic flexible disc by anodic oxidation

IEEE Transactions on Magnetics, 1988
Flexible alumite discs were prepared and their recording characteristics and wear resistance is reported. To study the surface roughness of alumite film, single-crystal Al platelets with different crystallographic orientations were prepared and anodic oxidized.
N. Tsuya, T. Tokushima, M. Shiraki, Y. Umehara, Y. Saito, H. Nakamura, Y. Harada   +6 more
openaire   +1 more source

Finite Amplitude Dynamics of a Flexible Spinning Disc

Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems, 1995
Abstract The transverse dynamics of a high speed spinning disc which is clamped at the inner radius and rotating with a time-varying spin rate is examined in a space fixed frame of reference. The general nonlinear equations of motion governing the disc dynamics are systematically derived using displacement as well as stress function ...
N. Malhotra, N. Sri Namachchivaya, T. Whalen   +2 more
openaire   +1 more source

Analysis on Mechanical Characteristics of Flexible Membranous Disc Coupling

Advanced Materials Research, 2013
Using the basic finite element theory, 3D finite element models of flexible membranous disc coupling with different disc thickness is built by ANSYS ，and then the dynamic characteristics are analyzed in working conditions. In particular, the analysis of static stress and harmonic response to the thickness of 0.85 model is done for getting the stress ...
Hui Qun Yuan
exaly   +2 more sources

Flexible Mounted Double-Discs for Conservation Planters

Transactions of the ASAE, 1983
ABSTRACT OPENER discs are individually mounted on moveable plates to form novel furrow opener assemblies for conservation planters. The mounts allow relaxation of fabrication tolerances, elimination of periodic adjustments, and compensation for momentary planter frame distortions due to soil forces..
null John E. Morrison, null Jr., null Thomas J. Gerik   +2 more
openaire   +1 more source

The Transverse Runout of a Rotating Flexible Disc Under Stationary Sliders

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2009
The governing equation of a rotating flexible disc under stationary sliders is modelled under consideration of the initial transverse runout of the disc. Natural frequency and stability of the system is studied and checked, and steady-state response is obtained.
Yong-Chen Pei
exaly   +2 more sources