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 ...
bonding surfaces. Botto et al. [19] developed the contact model of a blade, which considered the effects of tensile load and friction factors on the contact behavior. Tian et al. [20] employed the thin-layer element method to simulate the influence zone and non-influence zone of the bolt...
As a result, service costs associated with repair and replacement of wear components (e.g., brake pads, brake rotors) may be significantly reduced. Furthermore, damage associated with wheel heating (due to braking friction) may be dramatically reduced. The presently disclosed traction motor drive...
frictionmechanical stabilityrotorsshear deformationtraction/ pad liningdisc brake rotorThis paper presents the dynamic stability analysis of a spinning, thick, annular disk loaded by a circumferentially distributed frictional traction. Considering the automotive/aircraft disc brake as a representative system ...
ROTORSBIFURCATION diagramsINTERFACIAL frictionPERIODIC motionBolted joints have been widely used in rotor assemblies of aircraft engines. A typical bolt joint is composed of two metal parts connected mechanically with pre-tensioned bolts. During operations, the bolting pretensions can vary with the ...
Effect of internal friction in the dynamic behavior of aerodynamic foil bearings. Tribol. Inter. 2008, 41, 387–395. [Google Scholar] Bou-Saïd, B.; Iordanoff, I.; Grau, G. On non-linear rotor dynamic effects of aerodynamic bearings with simple flexible rotors. J. Eng. Gas Turb. ...
Turbomachine rotors, supported by little damped rolling element bearings, are generally sensitive to unbalance excitation. Accordingly, most machines incorporate squeeze film damper technology to dissipate mechanical energy caused by rotor vibrations and to ensure stable operation. When developing a novel gea...
They found that the change in the direction of the friction affects the resonance characteristics of the system and the amplitude–frequency response curve varies considerably. Kojtych et al. [49] performed a typical analysis of blade-tip/casing contact related to the partial blade rotors (35, ...
It consists of the frictional force μFn, where μ is the friction coefficient acting between the particles, and the force due to the spring and the damping in the shear direction exceeding μFn. ηs represents the viscosity coefficient in the tangential direction and vs is the velocity in th...
The possible friction in the interface of the inter-fibre cracks can influence the damping behaviour of the investigated composite rotors. The selected method of extracting the modal damping ratio provides a first assessment of the global frequency-dependent damping [42]. When a further more ...