Gear Train Mesh Efficiency Study: The Effects of an Anti-Backlash Gear

Joshi, Yashodhan; Kelleher, Jordan E.

doi:10.4271/2014-01-1769

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…18,19 for the single-mesh and doublemesh models, respectively. In either case, equation (10) consists of a set of piecewise-linear differential equations due to backlash nonlinearity, which can be efficiently solved by using the piecewise linear solution methodology described in Ref. 18 This methodology does not require any numerical integration routines as it exploits linear analytical solution within each contact regime of functions g j [q j (t)] and h j [q j (t)].…”

Section: Torsional Dynamic Modelsmentioning

confidence: 99%

“…9 They also tend to reduce power density and efficiency of transmission systems. 10 Fundamental solutions to eliminating the source of rattle problems are rather sparse, as they would require an in-depth understanding of sensitivities of dynamics and resultant noise levels to key design parameters. Various manufacturing errors associated gear teeth were also shown to further complicate the resultant rattle behavior.…”

Section: Introductionmentioning

confidence: 99%

“…Several other studies focused on eliminating backlash through complex devices such anti-backlash gears. 9,10 These solutions are often effective under only certain operating conditions, and they make the systems complex and expensive. 9 They also tend to reduce power density and efficiency of transmission systems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An experimental and theoretical investigation of the influence of backlash on gear train vibro-impacts and rattle noise

Donmez

Kahraman

2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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Rattling is a perennial gear noise problem observed in various powertrain components ranging from manual transmissions to engine balancers and timing gear trains. Under lightly loaded conditions, gear systems that are subjected to input and/or output torque fluctuations exhibit vibro-impacts as tooth separations and coast-side contacts take place in the presence of backlash. Experimental set-ups that can impose tightly controlled torque fluctuations to single or multi-mesh gear train are used here to determine the sensitivity of the rattling noise levels to the magnitudes of backlash within wide ranges of torque fluctuation parameters. Torsional discrete models of the experimental set-ups were used to simulate these rattling motions and to predict impact velocity-based rattle severity indexes as a function of both excitation parameters and backlash magnitudes. Single-mesh results show that the larger backlash values result in higher noise levels in most of the cases. In case of double-mesh systems, the resultant noise levels and the corresponding rattle indices exhibit different sensitivities to backlash magnitudes depending on the excitation conditions.

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