Results 21 to 30 of about 8,221,958 (294)
The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue +5 more
doaj
Impact of Aggregated PV on Subsynchronous Torsional Interaction [PDF]
This paper investigates induced oscillation (specifically subsynchronous torsional interactions) in power systems arising from photovoltaic (PV) power modulation. Time domain simulations of a modified IEEE first-benchmark system are presented and analyzed.
Rasel Mahmud, Andy Hoke, Jonathan White
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The Impact of Complex Forcing on the Viscous Torsional Vibration Damper’s Work in the Crankshaft of the Rotating Combustion Engine [PDF]
The numerical calculations results of torsional vibration of the multi-cylinder crankshaft in the serial combustion engine (MC), including a viscous damper (VD), at complex forcing, were shown.
Jagiełowicz-Ryznar, C. +1 more
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Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control
In order to meet requirements in machine design, modularity is often brought forward as a way to cope with load variations and adaptability of the architecture.
David van Os +4 more
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Long-wavelength torsional modes of solar coronal plasma structures [PDF]
Aims. We consider the effects of the magnetic twist and plasma rotation on the propagation of torsional m = 0 perturbations of cylindrical plasma structures (straight magnetic flux tubes) in the case when the wavelength is much longer than the cylinder ...
V. M. Nakariakov +8 more
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Study on the torsional movement of a reed valve in a rotary compressor
Torsional movement makes the motion of a reed valve very complex and unmanageable in a rotary compressor. However, there is little information on the torsional movement of the reed valve in comparison to the valve displacement and velocity in the ...
Xiaoling Yu +5 more
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This study investigates the effectiveness of flanges with various types of stirrup and cross-sectional dimensions on the torsional behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC) hollow beams.
Jiale Zhou +4 more
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Flexural–torsional behavior of thin-walled composite space frames [PDF]
A general analytical model based on the first-order shear deformable beam theory applicable to thin-walled composite space frames with arbitrary lay-ups under external loads is presented.
Lee, Jaehong, Vo, Thuc
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Stick-slip vibration is a big problem that the drilling of deep wells has to face, especially for drilling of tough formations. This type of vibration leads to failure problems, reduces the rate of penetration, and lowers the borehole quality ...
Liping Tang, Xiaohua Zhu
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Dynamic Behavior of Shafts, Couplings and Working Body of the Machine under Torsional Impact Moment [PDF]
In this study, the influence of the torsional rigidity of the connected shafts, couplings and the working body of the machine, as well as the damping capacity of the coupling, on the torsional impact moment generated in the machine transmission is ...
Isa Khalilov, Abdullah H. Sofiyev
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