Numerical calculation of bending fatigue life of thin-rim spur gears

Kramberger, Janez; Šraml, Matjaž; Potrč, Iztok; Flašker, Jože

doi:10.1016/s0013-7944(03)00024-9

Cited by 48 publications

(32 citation statements)

References 6 publications

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“…Their use single model teeth with asymmetry load allowed calculation of stress distribution in the adjacent teeth. Kramberger et al [6] applied Boundary element method (BEM) analyzing the maximum TRBS of thin-rim spur gear. Shun Li [3] continue the research with quasi static loading model using load sharing ratio (LSR) method with tooth modifications.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Spur Gear Pair on Tooth Root Bending Stress in Radial Misalignment Contact Condition

Lias

Awang

Rao

et al. 2014

MATEC Web of Conferences

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Abstract. This paper evaluates the effects of radial misalignment contact on the tooth root bending stress values of spur gear pair during the gear meshing cycle. Radial misalignment (H) is denoted as the deviation of the pinion nominal position with respect to the gear tooth along the pinion axis to the gear which happened from manufacturing assembly errors (AE). A model based on involute 3D parametric CAD geometry, of spur gear design ISO 6336:2006 is analysed with allowable AE values from minimum 10µm to maximum 40µm with Finite-Element Method (FEM) model based methodology using a dynamics module from ANSYS. Main parameters of interest are the Tooth root bending stress (TRBS) in H condition with AE along the critical region with respect to face width of pinion-gear section. A comparison between standard High point single tooth contact models (HPSTC) to this model showed a good agreement that H with AE had great influence on TRBS as the values' increase. Radial misalignment influence factor (RMIF) was introduced as indication of TRBS values in consideration of H due to AE shows and inverted patterns higher for pinion, give a good justification that the pinion is weaker compared to the gear.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Spur Gear Pair on Tooth Root Bending Stress in Radial Misalignment Contact Condition

Lias

Awang

Rao

et al. 2014

MATEC Web of Conferences

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“…They determined that when back up ratio is below to 2 and the effect of rim thickness on stress increases. Kramberger et al [11] studied fatigue life of spur gear with thin rim. They used FEM and BEM methods to evaluate bending stresses.…”

Section: Introductionmentioning

confidence: 99%

Stress Analysis of Thin Rimmed Spur Gear with Asymmetric Trochoid

Yılmaz¹,

Doǧan²,

Karpat³

2017

World Congress on Mechanical, Chemical, and Material Engineering

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-Involute spur gears are widely used machine element in many industrial areas. Thin-rimmed spur gears are popular in applications where low weight design and high power transmission are required. The stress occurred on thin-rimmed spur gears are different from standard spur gears due to deformations on rim. For this reason, rim thickness is key parameter for stress analysis of thin-rimmed gears. As rim thickness decreases, the value of maximum bending stress increases and the location of maximum stress is moved bottom of tooth which results in fatigue life reduction. In this study, to decrease maximum bending stress and to move upper the critical point; asymmetric trochoid profile is proposed. Asymmetry is constituted with using rack cutter has different tip radius on sides. This allows using larger tip radius on one side. Firstly, 3D design of spur gear with thin rimmed is realized in CATIA precisely. Then gears are imported to ANSYS package for finite element analysis. Normal force is applied on HPSTC. The rim surface is not fixed to allow rim deformations. The effects of using asymmetric trochoid on value and location maximum bending stress of thin rimmed spur gears is obtained with conducted case studies.

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“…There are several numerical standards used to design gear as published by American Gear Manufacturers Association (AGMA) and International Organization for Standardization (ISO) with complex equations and calculations. In addition, Finite Elements Method (FEM) used to predict gear failure, estimates gears life in service [14] and later being verified by experimental test on bending strength. On top of numerical calculation and FEM, experimental gear testing is the best approach to find out gear bending strength.…”

Section: Introductionmentioning

confidence: 99%

Investigating bending strength of spur gear: A review

2016

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Abstract. Gear tends to play a very vital role in all industries. As other mechanical systems, it is subject to design parameter, installation errors, method of manufacture and load uncertainties arising from randomness. Before engineers could design an efficient and safe gear, it is importance to understand how gear can fail is much needed. This article reviews the methodology used to investigate bending strength of spur gear; Finite Element Method (FEM), Numerical Calculation and Investigational Techniques were usually carried out in order to understand the bending strength of thin-rimmed spur gear. Works and experiment from the literature were studied, and their findings were extracted to understand the methods used. The most common method used to investigate bending strength is the numerical calculation. This method was used with several types of established equations and standards to predict gear failures. Next stage is to simulate the gear using Finite Element Method (FEM) in order to get the analysis of gear strength. The most important stage is to put the gears to physical experiment or testing facilities to determine and validate all data from the numerical calculation and FEM method.

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Numerical calculation of bending fatigue life of thin-rim spur gears

Cited by 48 publications

References 6 publications

Evaluation of Spur Gear Pair on Tooth Root Bending Stress in Radial Misalignment Contact Condition

Evaluation of Spur Gear Pair on Tooth Root Bending Stress in Radial Misalignment Contact Condition

Stress Analysis of Thin Rimmed Spur Gear with Asymmetric Trochoid

Investigating bending strength of spur gear: A review

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