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Thermal Bending of the Rotor Due to Rotor-to-Stator Rub [PDF]
International Journal of Rotating Machinery, 2000 The rotor thermal bending due to the rotor-to-stator rubbing can lead to one of three types of observed rotor lateral motion: (1) spiral with increasing amplitude, (2) oscillating between rub]no-rub conditions, and (3) asymptotical approach to the rotor ...
Paul Goldman +2 more
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Physical Review Letters, 2021 A probability density function describing the angular evolution of a fixed-length atom-atom vector as a L vy rotor is derived containing just two dynamical parameters: the L vy parameter $ $ and a rotational time constant $ $. A L vy parameter $ \!
Faux, David A. +2 more
openaire +3 more sources
Dynamic Performance Analysis of Cage in Four-Point Contact Ball Bearing
Lubricants, 2022 Due to the special structure of double-half inner rings, four-point contact ball bearings are prone to uneven forces in the inner raceway during movement, which affects the dynamic performance of the rolling element and cage, and even leads to cage ...
Yeteng Li +5 more
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Splitting of Waves in Rotor-in-Rotor Nonlocal Metamaterials by Internal Rotor Coupling
SSRN Electronic Journal, 2022 Mechanical metamaterials can be used to control wave propagation because they are flexibly adjustable. In this paper, a one-dimensional rotor-in-rotor metamaterial with internal rotor coupling is proposed. This metamaterial introduces a new connection between lattices into a rotor-in-rotor system to produce a nonlocal metamaterial.
Leiyu Yang +3 more
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Lubricants, 2023 The complex sliding behavior inside ball bearings seriously affects the mechanical system’s performance. Current dynamic models for predicting this behavior suffer from poor generality and convergence.
Shuaijun Ma +5 more
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Optimized Mask-RCNN model for particle chain segmentation based on improved online ferrograph sensor
Friction, 2023 Ferrograph-based wear debris analysis (WDA) provides significant information for wear fault analysis of mechanical equipment. After decades of offline application, this conventional technology is being driven by the online ferrograph sensor for real-time
Shuo Wang +4 more
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Research on the Bearing Sliding Loss Based on Time-Varying Contact Angle between Ball and Raceway
Lubricants, 2022 Based on the mechanical model, the friction loss between the ball and the raceway along the major axis of the contact ellipse is analyzed. The result shows that this part of the loss accounts for about 13.67% of the overall loss, which is mainly ...
Shuaijun Ma +4 more
doaj +1 more source
Differential Flatness of Quadrotor Dynamics Subject to Rotor Drag for Accurate Tracking of High-Speed Trajectories [PDF]
IEEE Robotics and Automation Letters, 2017 In this letter, we prove that the dynamical model of a quadrotor subject to linear rotor drag effects is differentially flat in its position and heading. We use this property to compute feedforward control terms directly from a reference trajectory to be
Matthias Faessler +2 more
semanticscholar +1 more source
Fundamenta Mathematicae, 2004 Rotors were introduced in Graph Theory by W.Tutte. The concept was adapted to Knot Theory as a generalization of mutation by Anstee, Przytycki and Rolfsen in 1987. In this paper we show that Tristram-Levine signature is preserved by orientation-preserving rotations.
Akira Yasuhara +3 more
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npj Flexible Electronics, 2022 The rapid rise of the Internet of things (IoT) have brought the progress of electronic skin (e-skin). E-skin is used to imitate or even surpass the functions of human skin. Thermoregulating is one of the crucial functions of human skin, it is significant
Shengxin Xiang +5 more
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