Dynamic Analysis of Spur Gear Pairs: Steady-State Response and Stability of the Sdof Model With Time-Varying Meshing Damping

Amabili, Marco; Rivola, Alessandro

doi:10.1006/mssp.1996.0072

Cited by 140 publications

(63 citation statements)

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“…Gear mesh damping is considered to be proportional to gear mesh stiffness as did in Amabili and Rivola [33]. The gear mesh damping ratio is selected to be 0.07.…”

Section: Numerical Simulationmentioning

confidence: 99%

Spur Gear Tooth Pitting Propagation Assessment Using Model-based Analysis

Liang

Liu

Pan

et al. 2017

Chin. J. Mech. Eng.

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Tooth pitting is a common failure mode of a gearbox. Many researchers investigated dynamic properties of a gearbox with localized pitting damage on a single gear tooth. The dynamic properties of a gearbox with pitting distributed over multiple teeth have rarely been investigated. In this paper, gear tooth pitting propagation to neighboring teeth is modeled and investigated for a pair of spur gears. Tooth pitting propagation effect on time-varying mesh stiffness, gearbox dynamics and vibration characteristics is studied and then fault symptoms are revealed. In addition, the influence of gear mesh damping and environmental noise on gearbox vibration properties is investigated. In the end, 114 statistical features are tested to estimate tooth pitting growth. Statistical features that are insensitive to gear mesh damping and environmental noise are recommended.

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“…Gear mesh damping is considered to be proportional to gear mesh stiffness as did in Amabili and Rivola [33]. The gear mesh damping ratio is selected to be 0.07.…”

Section: Numerical Simulationmentioning

confidence: 99%

Spur Gear Tooth Pitting Propagation Assessment Using Model-based Analysis

Liang

Liu

Pan

et al. 2017

Chin. J. Mech. Eng.

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“…Damping and backlash have been neglected in some of the existing studies on the wind turbine gearboxes [27]. However, large influence of the damping and backlash in the nonlinear behavior was observed during wind turbine emergency stop [28,29]. Thus, damping and gear backlash are included in this model.…”

Section: Derivation Of Equationsmentioning

confidence: 99%

Dynamic Analysis of Wind Turbine Gearbox Components

Zhao

2016

Energies

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This paper studies the dynamic response of a wind turbine gearbox under different excitation conditions. The proposed 4 degree-of-freedom (DOF) dynamic model takes into account the key factors such as the time-varying mesh stiffness, bearing stiffness, damping, static transmission error and gear backlash. Both the external excitation due to wind and the internal excitation due to the static transmission error are included to represent the gearbox excitation conditions. With the help of the time history and frequency spectrum, the dynamic responses of wind turbine gearbox components are investigated by using the numerical integration method. This paper explains under which conditions the fretting corrosion, as one of the wind turbine gearbox failure modes, may occur. Furthermore, it is observed that the external excitation fluctuation has large influence on the dynamic responses of both the gears and bearings.

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“…For lightly loaded operating conditions, the critical viscous damping ratio, ζ, can be generally estimated as being inversely proportional to the gear teeth meshing stiffness: where is the viscous lubricant damping coefficient during gear mesh, is the average teeth mesh stiffness and is the gear pair's equivalent mass. It is understood that the damping ratio implicitly depends on the operating conditions (rotational speed, load and temperature), which influence the rigidity of the lubricant film developed between the teeth (Guilbault et al, 2012;Li and Kahraman, 2011;Amabili and Rivola, 1997).…”

Section: Introduction and Governing Equationsmentioning

confidence: 99%