Results 91 to 100 of about 88,667 (317)
ActuatorsTo improve the vibration performance of oil-lubricated tilting pad bearing systems, this paper investigates the impact of different structural parameters on the vibration reduction effect of piezoelectric actuators on flexible tilting pad bearings.
Yanyan Qin +4 more
doaj +1 more source
Energy cost assessment of a polar based controller applied to a flexible rotor supported by AMB
Mechanical Engineering Journal, 2015 From a designer point of view, optimizing the energy necessary for the control is an important element that could lead to downsize the control cabinet and to an increase of margins according to power amplifier capabilities. Also, reducing the energy used,
Benjamin DEFOY +2 more
doaj +1 more source
Instability thresholds for flexible rotors in hydrodynamic bearings [PDF]
Two types of fixed pad hydrodynamic bearings (multilobe and pressure dam) were considered. Optimum and nonoptimum geometric configurations were tested.
Allaire, P. E., Flack, R. D.
core +1 more source
A flexible rotor on flexible supports: modeling & experiments [PDF]
, 2009 In this study, a flexible rotor with variable support stiffness has been analyzed. Simple support models consisting of mass, spring systems are extracted from modal analysis of the isolated support and by applying static loads to the finite element model
Aarts, Ronald +4 more
core +1 more source
The use of orbitals and full spectra to identify misalignment [PDF]
, 2014 In this paper, a SpectraQuest demonstrator is used to introduce misalignment in a rotating set-up. The vibrations caused by misalignment is measured with both accelerometers on the bearings and eddy current probes on the shaft itself.
D Southwick +6 more
core +1 more source
Advanced Science, EarlyView.A rotational energy harvesting device that successfully reconciles high power density with mechanical durability through a hybrid sliding‐and‐bouncing kinematic mechanism is reported. The success reported in our paper includes addressing a dilemma where enhanced electrical output comes at the cost of increased friction and wear, limiting the practical ...
Yihong Lin +12 more
wiley +1 more source
Studies on Improving Seals for Enhancing the Vibration and Environmental Safety of Rotary Machines
VibrationThere is a constant demand for higher equipment parameters, such as the pressure of a sealing medium and shaft rotation speed. However, as the parameters increase, it becomes more difficult to ensure hermetization efficiency.
Zhifei Yuan +6 more
doaj +1 more source
Lubricants, 2015 On the basis of the V. K. Stokes micro-continuum theory, the effects of couple stresses on the nonlinear dynamic response of the unbalanced Jeffcott’s flexible rotor supported by layered hydrodynamic journal bearings is presented in this paper.
Mustapha Lahmar, Benyebka Bou-Saïd
doaj +1 more source
The effect of support flexibility and damping on the dynamic response of a single mass flexible rotor in elastic bearings [PDF]
The dynamic unabalance response and transient motion of the single mass Jeffcott rotor in elastic bearings mounted on damped, flexible supports are discussed.
Gunter, E. J., Kirk, R. G.
core +1 more source
Advanced Science, EarlyView.This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu +7 more
wiley +1 more source