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Damping capacity of VNS-2 steel
Strength of Materials, 19771. The damping properties of VNS-2 steel are mainly due to the dissipation of vibrational energy of a nonmagnetic nature. The capacity of the steel to dissipate energy during the attentuation of the vibrations is largely determined by the amount of residual austenite in the structure.
E. S. Makhnev +4 more
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Journal of Alloys and Compounds, 1994
Abstract An approach to higher damping by positively utilizing computer-aided control techniques has been investigated by comparing the relative magnitudes of active (computer-controlled) damping and material damping. The active damping effect increases the damping capacity of a brass beam vibration system from δif=0.012 (logarithmic decrement value ...
Hisashi Kawabe, Kazunobu Yoshida
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Abstract An approach to higher damping by positively utilizing computer-aided control techniques has been investigated by comparing the relative magnitudes of active (computer-controlled) damping and material damping. The active damping effect increases the damping capacity of a brass beam vibration system from δif=0.012 (logarithmic decrement value ...
Hisashi Kawabe, Kazunobu Yoshida
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Factors Controlling Superelastic Damping Capacity of SMAs
Journal of Materials Engineering and Performance, 2009In this paper, questions linked to the practical use of superelastic damping exploiting stress-induced martensitic transformation for vibration damping are addressed. Four parameters, particularly vibration amplitude, prestrain, temperature of surroundings, and frequency, are identified as having the most pronounced influence on the superelastic ...
L. Heller +3 more
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SPECIFIC DAMPING CAPACITY FOR ARBITRARY LOSS ANGLE
Journal of Sound and Vibration, 1998Abstract An analysis was performed to establish a relationship between specific damping capacity and loss angle for materials with arbitrary loss angle. The motivation for this work is that the usual relationship is only valid for low loss materials and leads to some confusion when the specific damping capacity is greater than one. In this paper, two
G.F. Lee, B. Hartmann
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Damping capacity, strain hardening and fatigue
Proceedings of the Physical Society, 1947An electromagnetic method of exciting torsional resonance vibrations is described. For some alloys of aluminium, notably binary alloys containing 5% and 11% of magnesium, vibrational strains of sufficient magnitude to cause fatigue cracks can be developed by this method at frequencies of the order of one kilocycle per second.
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The damping capacity of a multilayer steel
Strength of Materials, 1994Damping capacities have been compared for multilayer steel specimens (substrate steel AK), which have various strengths in the joints between the layers and various dispositions of the joint zones relative to the surface; a multilayer steel containing a cobalt-base foil has also been examined. With that steel, there is a direct relationship between the
A. P. Bovsunovskii, K. A. Tsykulenko
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The Damping Capacity of Damping Devices during Rotor-over-Stator Rolling
Thermal Engineering, 2019The article presents results of investigating the influence of elastic damping devices that secure the rotor and the stator under high-amplitude oscillations under unfavorable development of an accident, e.g., upon rubbing of the rotor against the stator.
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Elastic architected materials with extreme damping capacity
Extreme Mechanics Letters, 2017Abstract We report on a new class of elastic architected materials with hybrid unit cells, consisting of discrete elastic elements with non-convex strain energy and one convex (but possibly nonlinear) elastic element, to obtain a reversible multifunctional material with extreme energy dissipation.
Babak Haghpanah +4 more
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Specific damping capacity for high-loss materials.
The Journal of the Acoustical Society of America, 1996The purpose of this presentation is to establish the relation between specific damping capacity and loss factor for high-loss materials. The motivation for this work is that the commonly used relationship between these variables is only valid for low-loss materials and leads to significant errors as the loss increases.
Gilbert F. Lee, Bruce Hartmann
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O.D.S. Ferritic Steels with High Damping Capacity
1982Many of the service failures experienced in gas turbine- blades are related to stress built up during vibration near resonance. Therefore, those articles should be made of materials whose stress attenuation properties are maintained under high centrifugal loading induced static stresses and over a wide dynamic strain range.
Ch. Lecomte-Mertens +4 more
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