Impact of geometrical defects on bearing assemblies with integrated raceways in aeronautical gearboxes

Zamponi, Laurent; Mermoz, Emmanuel; Linares, Jean‐Marc; Sprauel, Jean‐Michel

doi:10.1016/j.mechmachtheory.2008.10.005

Cited by 18 publications

(10 citation statements)

References 13 publications

(30 reference statements)

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“…In the second part of this paper, a study was made of the sensitivity of tooth profiles to geometric variations. The work by Linares et al [14] and by Zamponi et al [15] on the geometric error of mechanical parts demonstrates the impact of loading on the geometric distortion of a mechanical system. In these papers, Zamponi et al [16,17] examine the effect of local distortion (at the point of contact) as well as structural distortion (displacement of the shafts) on its mechanical systems.…”

Section: Methods For Generating Tooth Profiles 23 Geometric Sensitivitymentioning

confidence: 99%

Stress optimization and study of the sensitivity to geometric variations of a spur gear tooth profile

Guyonneau

Mermoz²,

Mailhé

et al. 2013

Mechanics & Industry

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This paper presents an approach for obtaining an optimized geometry for the flank of a tooth by minimizing the equivalent contact stress. The stress calculation method is based on Hertz theory. As the majority of tooth profiles are involute, the geometric variation of the flank of the tooth is achieved variationally relative to the involute profile. The optimum profile is obtained by Monte Carlo simulation. During this optimization, a polynomial expression of the tooth geometry is used. The parameters influencing the simulation are the four characteristic contact points. The approach presented has been applied in a representative case. A study of the geometric sensitivity was conducted on the optimized tooth profile. Two different approaches were considered: by Monte Carlo simulation and analytical propagation. The robust and linear nature of the behavior of the tooth profile was demonstrated when it was subjected to geometric variations.

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Section: Methods For Generating Tooth Profiles 23 Geometric Sensitivitymentioning

confidence: 99%

Stress optimization and study of the sensitivity to geometric variations of a spur gear tooth profile

Guyonneau

Mermoz²,

Mailhé

et al. 2013

Mechanics & Industry

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“…TJ Park 4 discussed the effect of deflection on contact pressure under elastohydrodynamic lubrication (EHL) and reported very high values due to the tilted misalignment. Zamponi et al 5 presented a mixed methodology employing both a finite element analysis (FEA) method and Hertz contact theory to analyze the contact pressure in bearings and considered the effects of tilted misalignment on the load distribution for bearings with both rigid and flexible rings. Z Ye et al 6 analyzed the distribution of loads and contact stress in high-speed roller bearings with quasi-dynamic method and FEA method considering effects of tilted misalignment between inner and outer rings for the roller cylindrical bearings.…”

Section: Introductionmentioning

confidence: 99%

The bearing parallel misalignment running model–based machine tool spindle thermal error analysis

Dong

Zhou

Chen

2018

Advances in Mechanical Engineering

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As a key component of the machine tool spindle, bearing has critical influences on the spindle thermal error. In particular, the installation errors of bearing have considerable effects upon the spindle thermal error by altering the bearings' internal contact angles, contact loads, and friction torques for different ball positions, but have yet to be fully elucidated. In this article, the influence of installation errors on the resulting spindle thermal error was evaluated using both empirical methods and simulation method, with the ultimate aim of reducing installation error. Deviations within the bearing support were used to simulate bearing parallel misalignment; bearing parallel misalignment running model was built, and an analysis and comparison of various conditions were used to determine the influence, showing that the parallel misalignment has significant influence on the spindle Z direction thermal error.

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“…N. Demirhan et al [28] established 2D finite element model of roller bearing that systematically calculated stress-strain under static load and validated it by actual tests. L. Zamponi et al [29] established a mixed model of roller bearing and calculated the contact pressure and contact angle of roller bearing raceway with surface defect. Lin Tengjiao et al [30] established a 3D finite element model ball bearing by using LS-DYNA and calculated on the basis of explicit dynamics method, the dimensions of inner and outer ring and holder of this model.…”

Section: Introductionmentioning

confidence: 99%

A Design Method for a New Type of Cylindrical Roller Bearing Based on Edge Effect

Qishui¹,

Wen²,

Li³

et al. 2016

Open mechan. eng. J.

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The elastic composite cylindrical roller bearing is a new type of bearing designed with polytetrafluoroethylene filling in a deep hole hollow roller. This design can improve the stress concentration and also performance of the bearing. A study was conducted to parameterize the deep hole structure to obtain its design variables, the angle a and radius c by studying the influence of the design on stress concentration in elastic composite cylindrical roller bearing edge; to determine the BP neural network sample data using orthogonal test and finite element methods; to establish mapping relationship between the design variables and the maximum stress by BP neural network learning algorithm and to obtain the objective function required for structural optimization of genetic algorithm. The study attempts to optimize, search and calculate the most fitting structural parameters of elastic composite cylindrical roller by genetic algorithm with NU318E bearing as the optimization object and obtain the values of optimal design variables as a = 48.68° and c=9.67mm. The work also includes minimization of the comprehensive value of the maximum contact stress and the maximum equivalent stress of the edge and elliptic zones of elastic composite cylindrical roller after optimizing and increasing the contact fatigue service and bearing capacity of the bearing. The optimization procedure and method presented in this paper can serve as a useful reference to the optimization of structure for other elastic composite cylindrical roller edges.

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Impact of geometrical defects on bearing assemblies with integrated raceways in aeronautical gearboxes

Cited by 18 publications

References 13 publications

Stress optimization and study of the sensitivity to geometric variations of a spur gear tooth profile

Stress optimization and study of the sensitivity to geometric variations of a spur gear tooth profile

The bearing parallel misalignment running model–based machine tool spindle thermal error analysis

A Design Method for a New Type of Cylindrical Roller Bearing Based on Edge Effect

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