Influence of friction‐induced heating on the dynamic behaviour of rotors supported by journal bearingsDifferent oil‐film﹊nduced instabilities have to be accounted for when designing rotor systems supported by hydrodynamic bearings. Because the system's behaviour is strongly dependent on the thermal ...
factors the gear system were considered in dynamic analysis, less research has been carried out in the effects of the eccentricity on a gear-rotor-rolling bearing system with bending–torsion coupling, considering time varying mesh stiffness, gear backlash, tooth surface friction and bearing force. ...
A low-friction and low-vibration rectifying structure including an electrode-segment forming member of a stator which has two electrode segments disposed therein. An annular stator-side groove is formed in the electrode-segment forming m... M Matsuda - US 被引量: 4发表: 2003年 加载更多来源...
The bit-rock contact was modeled as a combination of the Karnopp model (at zero angular velocity) and the Stribeck friction, through a switching model. The FEM models which have addressed the torsional stick-slip vibration of the full-scaled drill string, has used a different approach, and ...
They analyzed the eccentricity ratio changes, friction coefficient, attitude angle, and side oil flow versus the wear depth. Furthermore, The effect of wear was explored on the dynamic response of a rotor-bearing system by Chasalevris et al. [22]. According to their study, wear in the ...
propeller hydrodynamics, and bearing oil film, alignment of propulsion shafting is often variable during the navigation of ships, resulting in a large gap between theoretical results and experimental results, and even causing abnormal vibration, friction impact, oil film instability, and other fault beh...
J.W. Lund [7] modeled the bearing as two orthogonal spring-dampers with eight linearized stiffness and damping coefficient oil film force models, which was later used by Xie [8] to study the dynamic response of circular pad bearings and rotors. Capone presented an exact analytical solution ...
[47] adopted the nodal finite element method to establish a dynamic model of the herringbone planetary gear system considering friction, mesh stiffness, and mesh error excitation. The influence of friction excitation on the dynamic response of the herringbone planetary gear under different working ...
( J r , J l ) , ( k e r , k e l ) , ( k m r , k m l ) , and ( b r , b l ) , associated with the moments of inertia related to the rotors and motor loads, the counterelectromotive force constants, the motor torque constants, and the viscous friction coefficients, ...
Without loss of generality, suppose the inter-shaft bearings are the general ball bearings and are located between the inner- and outer-rotors to achieve the coupling of the sun gear shaft and carrier shaft. For the deep groove ball bearing, an appropriate value of preload should be applied ...