Journal ArticleDOI
A spur gear mesh interface damping model based on elastohydrodynamic contact behaviour
Sheng Li,Ahmet Kahraman +1 more
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In this paper, the damping mechanism at the interface of the mating spur gear teeth is investigated and the dynamic behavior of a spur gear pair is represented by a two-degree-of-freedom nonlinear model with the damp provided by the instantaneous tribological behaviour of the tooth contacts.Abstract:
In this study, the damping mechanism at the interface of the mating spur gear teeth is investigated. The dynamic behaviour of a spur gear pair is represented by a two Degree-of-Freedom (DOF) nonlinear model with the damping provided by the instantaneous tribological behaviour of the tooth contacts. The shear stress distributions along the tooth surfaces are incorporated with the dynamic model to formulate the periodic gear mesh viscous damping. With the assumption the radii of curvature of the contact surfaces can be represented by the ones at the pitch point, a simplified expression for the damping ratio is formulated.read more
Citations
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Journal ArticleDOI
A tribo-dynamic model of a spur gear pair
Sheng Li,Ahmet Kahraman +1 more
TL;DR: In this paper, a tribo-dynamics model for spur gear pairs is proposed, which couples a mixed elastohydrodynamic lubrication model of a spur gear pair with a transverse-torsional dynamic model.
Journal ArticleDOI
Dynamical modeling and experimental validation for tooth pitting and spalling in spur gears
TL;DR: In this paper, the effects of tooth surface roughness changes and geometric deviations due to pitting and spalling on the vibration responses of a gear transmission are investigated. And the proposed gear dynamical model is validated by comparison with responses obtained from experimental test rig under different conditions.
Journal ArticleDOI
Influence of dynamic behaviour on elastohydrodynamic lubrication of spur gears
Sheng Li,Ahmet Kahraman +1 more
TL;DR: In this article, a non-linear time-varying vibratory model of spur gear pairs is introduced to predict the instantaneous tooth forces under dynamic conditions within both the linear and nonlinear operating regimes.
Journal ArticleDOI
A tribo-dynamic contact fatigue model for spur gear pairs
Sheng Li,Anusha Anisetti +1 more
TL;DR: In this paper, a contact fatigue model for spur gears operating under the high speed condition where the dynamic behavior is evident is proposed, and the resultant multi-axial stress fields (from these surface tractions) on and below the surface are then used to assess the fatigue damage.
Journal ArticleDOI
An improved dynamic model of spur gear transmission considering coupling effect between gear neighboring teeth
TL;DR: In this paper, a spur gear dynamic model is presented, where the detailed deformations of individual teeth are considered, including the tooth flexible deformations, gear body deformation, the local teeth contact deflections, and the tooth deformations due to its neighboring loaded tooth.
References
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Journal ArticleDOI
Mathematical models used in gear dynamics—A review
TL;DR: A comprehensive survey of the studies involved in mathematical modelling of gears for dynamic analysis is made in this paper, where the basic characteristics of each class of dynamic models along with the objectives and different parameters considered in modeling are discussed.
Journal ArticleDOI
Non-linear dynamics of a spur gear pair
Ahmet Kahraman,Rajendra Singh +1 more
TL;DR: In this paper, a digital simulation technique and the method of harmonic balance were used to develop steady state solutions for the internal sinuosidal excitations in a spur gear pair.
Journal ArticleDOI
Non-linear dynamic response of a spur gear pair: modelling and experimental comparisons
TL;DR: In this paper, the dynamic response of a spur gear pair is investigated using a finite element/contact mechanics model, which offers significant advantages for dynamic gear analyses and can be used to reveal complex non-linear phenomena.
Journal ArticleDOI
Non-linear dynamics of gear-pair systems with periodic stiffness and backlash
TL;DR: In this article, the dynamics of a gear-pair system involving backlash and time-dependent mesh stiffness are investigated, where the system is under the action of external excitation, caused by torsional moments and gear geometry errors.
Journal ArticleDOI
Steady state forced response of a mechanical oscillator with combined parametric excitation and clearance type non-linearity
G. W. Blankenship,Ahmet Kahraman +1 more
TL;DR: In this article, a mechanical system exhibiting combined parametric excitation and clearance type nonlinearity is examined analytically and experimentally in an effort to explain complex behavior that is commonly observed in the steady state forced response of rotating machines.
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