Optimization of asymmetric spur gear drives to improve the bending load capacity

Kumar, Vikash; Muni, D. V.; Muthuveerappan, G.

doi:10.1016/j.mechmachtheory.2007.06.006

Cited by 60 publications

(7 citation statements)

References 9 publications

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“…The model is made up of the influence of the worn surface profiles on dynamic tooth forces, its transmission error, as well as the influence of dynamic tooth forces on the wear profiles. Kumar et al (2008) investigated the use of asymmetric toothed gear to develop fillet capacity in bending. They also analyzed the maximum fillet stress in order to help improve fillet capacity in bending.…”

Section: Gear Stress Analysis Studiesmentioning

confidence: 99%

A Review on a Straight Bevel Gear Made from Composite

Al-Qrimli¹,

Khalid²,

Abdelrhman³

et al. 2016

JMSR

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The purpose of this work is to present a clear fundamental thought for designing and investigating straight bevel gear made of composite material. Composite materials have the advantage of being light, producing low noises, and extra loading capacities. Due to these properties, it is highly preferable over conventional materials. A comparison between different types of material used in a gear structure will be shown. The outcome shows that a new form of cheap material may be useful for designing a new type of lighter and stiffer gear, designed for robotic arm applications or any power transmission application.

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Section: Gear Stress Analysis Studiesmentioning

confidence: 99%

A Review on a Straight Bevel Gear Made from Composite

Al-Qrimli¹,

Khalid²,

Abdelrhman³

et al. 2016

JMSR

View full text Add to dashboard Cite

show abstract

“…Pedersen [21] showed that the bending stress reduced with the optimized asymmetric gear design obtained by changing the tool geometry. Senthil Kumar et al [22] investigated the influence of pressure angle, asymmetric factors, and profile shift on the maximum fillet stress to propose the optimum parameter levels that improve the fillet bending capacity. They also compared the FEA model results they used in their studies with ISO 6336-1:2019 and ANSI/AGMA 2001-D04 standards for symmetric gears.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Tooth Bending Stress Calculation of Gears With Asymmetric Teeth

Doǧan

Yüce

Karpat

2021

Preprint

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Today, gear designs with asymmetric tooth profiles offer essential solutions in reducing tooth root stresses of gears. Although numerical, analytical, and experimental studies are carried out to calculate the bending stresses in gears with asymmetric tooth profiles a standard or a simplified equation or empirical statement has not been encountered in the literature. In this study, a novel bending stress calculation procedure for gears with asymmetric tooth profiles is developed using both the DIN3990 standard and the finite element method. The bending stresses of gears with symmetrical profile were determined by the developed finite element model and was verified by comparing the results with the DIN 3990 standard. Using the verified finite element model, by changing the drive side pressure angle between 20° and 30° and the number of teeth between 18 and 100, 66 different cases were examined and the bending stresses in gears with asymmetric profile were determined. As a result of the analysis, a new asymmetric factor was derived. By adding the obtained asymmetric factor to the DIN 3390 formula, a new equation has been derived to be used in tooth bending stresses of gears with asymmetric profile. Thanks to this equation, designers will be able to calculate tooth bending stresses with high precision in gears with asymmetric tooth profile without the need for finite element analysis.

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“…Numerical examination of the significance of asymmetric profiles is found in the work of Pedersen [14] and PrabhuSekar and Muthuveerappan [15], while the experimental analysis is found in Demet and Ersoyoǧlu [16]. Examination of the effect of asymmetric design on the bending strength can also be found in the work of Kapelevich [17] and Senthil Kumar et al [18], where the authors emphasized the determination of the optimum profile shift coefficient for the tension.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Nominal Tooth Root Stress for External, Cylindrical Gears with Symmetric and Asymmetric Profile

Debreczeni

Bognár

2020

Wseas Transactions on Applied and Theoretical Mechanics

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The determination of tooth bending strength is a basic issue in gear design. This work presents the change of nominal tooth root stress of external toothed, cylindrical gears depending on the geometry used. The nominal tooth root stress is analyzed with using finite element simulations. The numerical calculations are executed in Abaqus. The imported geometries are produced by our own program in MATLAB. The boundary conditions to the models are defined accordance with the most significant analytical methods used in practice. This approach allows mapping direct correlation analysis by these calculations. The optimization of computational capacity used is also considered. In addition to the examination of the significant tooth stress value of symmetrical element pairs, the position of the critical cross-section is also analyzed. The effect of the asymmetric design of the tooth profile on the nominal tooth root stress is also presented in our investigations. The purpose of the numerical simulations carried out here is to determine the effect of the coast side angle on the magnitude of the significant tooth root stress and the position of the critical cross-section.

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Optimization of asymmetric spur gear drives to improve the bending load capacity

Cited by 60 publications

References 9 publications

A Review on a Straight Bevel Gear Made from Composite

A Review on a Straight Bevel Gear Made from Composite

A Novel Method for Tooth Bending Stress Calculation of Gears With Asymmetric Teeth

Investigation of the Nominal Tooth Root Stress for External, Cylindrical Gears with Symmetric and Asymmetric Profile

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