Results 241 to 250 of about 3,667,485 (307)

Dynamics of Wrist-Worn Eccentric-Rotor Energy Harvesters

, 2020
This work concerns the steady-state dynamics of eccentric-rotor harvesters under the excitation of a forced pendulum, selected as a simplified representation of the swinging motion of the human arm during locomotion, to better understand their use for ...
R. Rantz, S. Roundy
semanticscholar   +1 more source

Frictional effects on the nonlinear dynamics of an overhung rotor

Communications in nonlinear science & numerical simulation, 2019
An overhung rotor model is explored to determine the effect of friction during contact between the rotor and stator. The model has two degrees of freedom with rotor stator contact and the equations of motion are non-dimensionalised. A parametric study of
Elijah T Chipato, A. Shaw, M. Friswell
semanticscholar   +1 more source

The dynamics of viscoelastic rotors

Dynamics and Stability of Systems, 1987
The stability of two mathematical models of a viscoelastic rotor—a 2-parameter solid model and a 3-parameter solid model—is investigated by means of a complex Routh—Hurwitz analysis. While the 2-parameter model possesses a certain well-known stability limit for the angular velocity, it is shown that the 3-parameter model has two stable regions for the ...
openaire   +1 more source

Study on Coupling Fault Dynamics of Sliding Bearing-Rotor System

Journal of Computational and Nonlinear Dynamics, 2019
The phenomenon of oil film oscillation and frequency locked may occur in a healthy rotor system which is supported by sliding bearing. The dynamic behavior of the rotor system with misalignment and rubbing coupling fault supported by sliding bearing is ...
Yang Liu, Xin Xicheng, Yulai Zhao, Ming Shuaishuai, Ma Yaxin, Jiyuan Han   +5 more
semanticscholar   +1 more source

DYNAMICS OF FLEXIBLE ROTORS

1963
Abstract : The determination of the critical speeds of a flexible rotor is usually carried out on the assumptions of negligible bearing mass and stiff ness. In this report the effect of bearing mass and stiffness on the natural frequencies of a uniform flexible shaft is found.
D. E. Dawson, J. E. Panarelli
openaire   +1 more source

Rotor Neurons: Basic Formalism and Dynamics

Neural Computation, 1992
Rotor neurons are introduced to encode states living on the surface of a sphere in D dimensions. Such rotors can be regarded as continuous generalizations of binary (Ising) neurons. The corresponding mean field equations are derived, and phase transition properties based on linearized dynamics are given.
Lars Gislén, Carsten Peterson, Bo Söderberg   +2 more
openaire   +1 more source

Nonlinear dynamics of a rotor–stator system with contacts

Nonlinear dynamics, 2023
A. Paiva, R. V. Moreira, Alex Brandão, M. Savi   +3 more
semanticscholar   +1 more source

Introduction to Rotor Dynamics

2013
Rotor-dynamics studies the lateral and torsional vibrations of rotating shafts, with the objectives of predicting the rotor vibrations and constraining the vibration level under an acceptable limit. In this chapter we present a short introduction to rotor dynamics to familiarize the reader with the basic concepts and terminologies commonly used in ...
Se Young Yoon, Zongli Lin, Paul E. Allaire   +2 more
openaire   +1 more source

Dynamic balancing of small gyroscope rotors

Electrical Engineering, 1937
Discussion of papers published in the June 1937 issue, pases 706–10 and 729–34, and presented for oral discussion at the vibration and balance session of the summer convention, Milwaukee, Wis., June 25,1937.
O. E. Esval, C. A. Frische
openaire   +1 more source

Dynamics of Rotors and Foundations

1993
1 Introduction.- 2 The one Degree of Freedom System.- 3 Shaft with Central Disc.- 4 Shaft with Non Central Disc.- 5 The Short and the Long Rotor.- 6 Oil-Film Bearings.- 7 Rotors with Oil-film Bearings.- 8 Vertical Rotors.- 9 Rolling-element Bearings.- 10 Shaft Seals.- 11 Steam Whirl.- 12 Internal Damping.- 13 Non-circular Shafts.- 14 Computer Model ...
openaire   +1 more source