Results 41 to 50 of about 48,228 (306)
Semi-active control of crankshaft skyhook based on magnetorheological torsional damper
Frontiers in Materials, 2022 The purpose of this study was to solve the problem that the damping of rubber or silicone oil torsional dampers used in crankshafts is not adjustable and cannot effectively control torsional vibration at different resonant frequencies.
Wei He +7 more
doaj +1 more source
Field Telemetry of Blade-rotor Coupled Torsional Vibration at Matuura Power Station Number 1 Unit [PDF]
, 1991 The quasi-modal reduction technique and finite element model (FEM) were used to construct an analytical model for the blade-rotor coupled torsional vibration of a steam turbine generator of the Matuura Power Station.
Isii, Kuniyoshi +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
Jixie chuandong, 2021 This study attempts to solve the problems such as low efficiency and relatively small range due to the constraints of device and monotony of vibration in ultrasonic assisted rolling of gears.
Jinhao Gao +3 more
doaj
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Analysis of the effects of torsional impact tools on drill string stick–slip vibration
Energy Exploration & ExploitationTorsional impactor is widely used in deep and ultra-deep wells because it can suppress stick–slip vibration and increase ROP. As the direct factor affecting torsional impactor effect, it's working parameters study is still not sufficient.
Chaoyi She +5 more
doaj +1 more source
Active Control of Drive Chain Torsional Vibration for DFIG-Based Wind Turbine
Energies, 2019 Due to the fast electric control of the doubly-fed induction generator (DFIG) when experiencing power grid disturbance or turbulent wind, the flexible drive chain of the wind turbine (WT) generates long-term torsional vibration, which shortens the ...
Zhongyi Li +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller +8 more
wiley +1 more source
Torsional Vibration Test on the Shaft System of Reciprocating Compressor
Shiyou jixie, 2020 One certain type of compressor suffers excessive current fluctuation. In order to solve this problem, torsional vibration test was carried out on the compressor and the test results were analyzed by means of the analog multi-frequency sine sweep method ...
Wang Yibing +3 more
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Rotordynamic response analysis program [PDF]
, 1971 Computer routine is similar to Holzer's method in torsional vibration treatment, and Prohl's and Myklestad's approach in computing rotor deflection.
Shen, F. A.
core +1 more source