Results 71 to 80 of about 283,093 (346)
Jixie chuandong, 2008 Take three-fixing-lobe bearings,which are not concentric supporting elastic Effort rotor as the research subject.Based on considering the stiffness and damping characteristics of journal bearing,dynamic coefficients of journal bearing and damping ...
阎庆华, 安琦
doaj
, 2009 Prominences are partially ionized, magnetized plasmas embedded in the solar corona. Damped oscillations and propagating waves are commonly observed. These oscillations have been interpreted in terms of magnetohydrodynamic (MHD) waves.
Ballester, J. L., Oliver, R., Soler, R.
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Material damping ratio from free-vibration method
Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation, 2018 Abstract One important aspect of soil dynamics is attenuation or energy loses. This inherent dynamic property is essential in the analysis of soil behavior subjected to a dynamic load. Energy absorption in soils leads to the definition of an equivalent viscous damping ratio (D).
Katarzyna Gabryś +3 more
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Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
Studying The Feasibility Of Powder Composite For Mechanical Damping Purposes
Journal of Engineering and Sustainable Development, 2014 The present work is concerned with study some of the mechanical properties (Brinell hardness, Bending strength, Damping) for a metal matrix composite (Aluminum-powder).
Hassan H. Mahdi +2 more
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Applied Sciences, 2019 The damping ratio (D) is one of the key soil parameters in geotechnical issues where the soil is subjected to dynamic loads, like machines foundation, city tram and subway traffic, and driving of sheet pile or precast pile.
Emil Soból +3 more
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Fractional robust control of ligthly damped systems [PDF]
, 2006 The article proposes a method to design a robust controller ensuring the damping ratio of a closed-loop control. The method uses a contour para-meterized by the damping ratio in the Nichols plane and the complex non-integer (or fractional)differentiation
Janat, Yaman +3 more
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Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production
Advanced Functional Materials, EarlyView.Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen +4 more
wiley +1 more source
MATEC Web of Conferences, 2016 Research in the important parameters for modeling the dynamic behavior of soils has led to rapid development of the small strain stiffness and damping ratio for use in the seismic method. It is because, the experimental determination of the damping ratio
Bawadi Nor Faizah +3 more
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Design of a fractional control using performance contours. Application to an electromechanical system [PDF]
, 2003 The article proposes a frequency-based method to design a controller ensuring dynamic behavior of a closed-loop control: the first overshoot of the step response in the tracking mode or in the regulation mode, the damping ratio and the natural frequency ...
Lanusse, Patrick +2 more
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