Bending fatigue testing of gear teeth under random loading

doi:10.1243/0954406011524135

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Bending fatigue testing of gear teeth under random loading

Journal Article•DOI•

Bending fatigue testing of gear teeth under random loading

D. Hanumanna, S Narayanan¹, S Krishnamurthy¹•Institutions (1)

Indian Institutes of Technology¹

01 Jul 2001-Vol. 215, Iss: 7, pp 773-784

TL;DR: In this article, a gear box fitted in an armoured tracked vehicle for the purpose of power transmission and positioning of rotating heavy mass to the desired angle with high accuracy is subjected to fluctuating loads that are random in nature.

Abstract: The gears in a gear box fitted in an armoured tracked vehicle for the purpose of power transmission and positioning of rotating heavy mass to the desired angle with high accuracy are subjected to fluctuating loads that are random in nature. One of the important modes of failure in cyclic loading conditions including random loads is fatigue failure. It is thus important from the design point of view to estimate the life of the gears under these conditions. The fatigue life of components subjected to sinusoidal loading can be estimated by using cumulative damage theories. Their extension to random load fatigue, though straightforward, may not be very accurate owing to inherent scatter exhibited by the fatigue phenomenon. It is therefore necessary experimentally to determine the fatigue life of randomly loaded components and establish the validity of the theoretical model. An electrohydraulic test rig has been designed and fabricated that is capable of generating different types of load pattern by ad...

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Journal Article•DOI•

Estimation of Bending Fatigue Life of Hypoid Gears Using a Multiaxial Fatigue Criterion

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M. A. Hotait¹, Ahmet Kahraman²•Institutions (2)

American University of Sharjah¹, Ohio State University²

01 Oct 2013-Journal of Mechanical Design

TL;DR: In this article, a crack initiation life prediction methodology for the tooth bending fatigue of hypoid gears is proposed, which employs a previously developed finite-element based hypoid gear root stress model (Hotait et al. 2011) to establish the multiaxial stress time histories within the root fillet regions.

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Abstract: In this study, a crack initiation life prediction methodology for the tooth bending fatigue of hypoid gears is proposed. This methodology employs a previously developed finite-element based hypoid gear root stress model (Hotait et al. 2011, “An Investigation of Root Stresses of Hypoid Gears with Misalignments,” ASME J. Mech. Des., 133, p. 071006) of face-milled and face-hobbed hypoid gears to establish the multiaxial stress time histories within the root fillet regions. These stress time histories are combined with a multiaxial crack initiation fatigue criterion to predict life distributions along roots of the pinion and the gear. The predictions of the multiaxial fatigue model are compared to those from a conventional uniaxial fatigue model to establish the necessity for a multiaxial approach. The model is exercised with an example face-milled hypoid gear set from an automotive application to demonstrate the impact of various misalignments well as the key cutting tool parameters on the resultant tooth bending lives.

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6 citations

Journal Article•DOI•

Multiaxial fatigue analysis of stranded-wire helical springs:

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Hossein Darban¹, Mostafa Nosrati¹, Faramarz Djavanroodi¹, Faramarz Djavanroodi²•Institutions (2)

Iran University of Science and Technology¹, Prince Mohammad bin Fahd University²

01 Sep 2015-International Journal of Damage Mechanics

TL;DR: In this article, a finite element method is implemented to model stranded-wire helical springs under different loading conditions, and finite element results are coupled with multiaxial fatigue criteria.

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Abstract: In this paper, finite element method is implemented to model stranded-wire helical springs under different loading conditions. Finite element results are coupled with multiaxial fatigue criteria su...

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3 citations

Cites background or methods from "Bending fatigue testing of gear tee..."

...…life of different materials under practical condition (Brown and Miller, 1973; Eyercioglu et al., 1997; Fatemi and Socie, 1988; Glinka et al., 1995; Hanumanna et al., 2001; Jan et al., 2012; Kandil et al., 1982; Kim and Kang, 2008; Lee et al., 2009; McDiarmid, 1994; Macha and Sonsino, 1999; Navid…...
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...…multiaxial fatigue criteria have been proposed (Brown and Miller, 1973; Eyercioglu et al., 1997; Fatemi and Socie, 1988; Glinka et al., 1995; Hanumanna et al., 2001; Jan et al., 2012; Kandil et al., 1982; Kim and Kang, 2008; Lee et al., 2009; McDiarmid, 1994; Macha and Sonsino, 1999; Navid…...
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...For this reason, several multiaxial fatigue criteria have been proposed (Brown and Miller, 1973; Eyercioglu et al., 1997; Fatemi and Socie, 1988; Glinka et al., 1995; Hanumanna et al., 2001; Jan et al., 2012; Kandil et al., 1982; Kim and Kang, 2008; Lee et al., 2009; McDiarmid, 1994; Macha and Sonsino, 1999; Navid Chakherlou and Abazadeh, 2011; Papadopoulos et al., 1997; Varvani-Farahani, 2000; Wang and Yao, 2004, 2006; You and Lee, 1996)....
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...Therefore, various methods and criteria have been suggested to describe and predict fatigue life of different materials under practical condition (Brown and Miller, 1973; Eyercioglu et al., 1997; Fatemi and Socie, 1988; Glinka et al., 1995; Hanumanna et al., 2001; Jan et al., 2012; Kandil et al., 1982; Kim and Kang, 2008; Lee et al., 2009; McDiarmid, 1994; Macha and Sonsino, 1999; Navid Chakherlou and Abazadeh, 2011; Papadopoulos et al., 1997; Varvani-Farahani, 2000; Wang and Yao, 2004, 2006; You and Lee, 1996)....
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A Theoretical and Experimental Investigation on Bending Strength and Fatigue Life of Spiral Bevel and Hypoid Gears

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Mohammad Adel Hotait¹•Institutions (1)

Ohio State University¹

01 Jan 2011

TL;DR: In this article, the influence of misalignments on Gear Bending Stresses has been investigated and the effect of Misalignments have been found to be a significant influence on the performance of these models.

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Abstract: .................................................................................................................................... ii DEDICATION ................................................................................................................................ iv ACKNOWLEDGMENTS ............................................................................................................... v VITA ............................................................................................................................................... vi PUBLICATIONS ............................................................................................................................ vi FIELDS OF STUDY....................................................................................................................... vi TABLE OF CONTENTS ............................................................................................................... vii LIST OF TABLES .......................................................................................................................... xi LIST OF FIGURES ....................................................................................................................... xii NOMENCLATURE ...................................................................................................................... xx TOOTH NOMENCLATURE ...................................................................................................... xxv CHAPTER 1 1.1 Background and Motivation .................................................................................................... 1 1.2 Literature Review..................................................................................................................... 4 1.2.1 Gear Root Stresses Prediction Models ............................................................................... 4 1.2.2 Influence of Misalignments on Gear Bending Stresses ..................................................... 7 viii 1.2.3 Gear Bending Fatigue Models ........................................................................................... 8 1.3 Scope and Objectives ............................................................................................................. 11 1.4 Dissertation Outline ............................................................................................................... 13 CHAPTER 2 2.

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3 citations

Cites background or methods from "Bending fatigue testing of gear tee..."

...Another group of studies [37-40] incorporated cumulative damage theories into highcycle or S-N based gear bending fatigue lives....
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...9 problems with LDR were reported in the experimental studies by Hanummana [39] and Oda [40]....
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...Similar 9 problems with LDR were reported in the experimental studies by Hanummana [39] and Oda [40]....
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Journal Article•DOI•

A Method for the Prediction of Fatigue Life of Notched Metallic Material

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Xin Lin¹•Institutions (1)

Anhui Polytechnic University¹

01 Apr 2014-Advanced Materials Research

TL;DR: Based on the finite element procedure and the partial damage model, this method inserts the non-local strain's definition formula into the loading function and damage rate increment formula, from this method, the nonpartial gradient enhancement damage model is obtained.

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Abstract: The traditional methods for the prediction of fatigue life of metallic material consider only the two processes of fatigue initiation and fatigue cracking, while the process from fatigue cracking to breaking has been neglected. This paper provides one new method of estimating the fatigue life of under-constant-amplitude loading spectrum---non-local gradient damage enhancement model method. Based on the finite element procedure and the partial damage model, this method inserts the non-local strain's definition formula into the loading function and damage rate increment formula. From this method, the non-partial gradient enhancement damage model is obtained. In this model, the material’s microscopic criterion factor and the material’s damage criterion have been considered, the process of endurance failure is also considered. Thus, the insufficiency of traditional research techniques is effectively avoided, the actual effect analysis of metallic material is more reasonable, and the actual operating mode is been conformed to.

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1 citations

Cites background or methods from "Bending fatigue testing of gear tee..."

...Potrl, Numerical calculation of bending fatigue life bof thin-rim spur gears Engineering Fracture Mechanics, 2004, 71:647-656 [2] D....
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...There are dozens of traditional methods for studying the fatigue life of metallic material, among which the relatively mature method is nominal stress method [1] , local stress - strain method [2] , stress field strength method [3] , fracture mechanics method [4] , energy method and the method of using theoretical knowledge of damage mechanics to estimate the fatigue life of metallic member, etc....
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Journal Article•

Bending Fatigue Strength of Spur Gears in Low-Cycle Range

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Satoshi Oda, Kouitsu Miyachika, Yutaka Harada

25 Mar 1984-Transactions of the Japan Society of Mechanical Engineers. C

TL;DR: In this article, the bending fatigue strength of spur gears in low-cycle range was investigated and the validity of these calculating methods was confirmed by carrying out a static loading test. And the characteristics of bending fatigue in spur gears were clarified to a considerable extent by a bending fatigue test.

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Abstract: This paper presents a study on bending fatigue strength of spur gears in low-cycle range. The calculating methods for adjacent-tooth gaps and the circumferential load, under which adjacent-tooth contacts occur due to the deflections of meshing teeth, are introduced. The validity of these calculating methods is confirmed by carrying out a static loading test. The characteristics of the bending fatigue strength of spur gears in low-cycle range are clarified to a considerable extent by carrying out a bending fatigue test.

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References

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Journal Article•DOI•

Cumulative Damage in Fatigue

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Milton A. Miner¹•Institutions (1)

Douglas Aircraft Company¹

01 Sep 1945-Journal of Applied Mechanics

3,568 citations

Journal Article•DOI•

Cumulative Damage in Fatigue: A Step towards Its Understanding:

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R. H. W. Brook¹, J. S. C. Parry²•Institutions (2)

Rolls-Royce Motor Cars¹, University of Bristol²

01 Jun 1969-Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)

TL;DR: In this article, a method is described which uses changes of apparent dynamic modulus and damping during fatigue cycling, for estimating accurately the fatigue lives of stainless steel (Rex 535) specimens.

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Abstract: A method is described which uses changes of apparent dynamic modulus and damping during fatigue cycling, for estimating accurately the fatigue lives of stainless steel (Rex 535) specimens This technique for estimating well in advance of failure the fatigue lives of individual specimens avoids the usual difficulties caused by scatter of fatigue results, and has enabled a more precise quantitative investigation to be made of cumulative fatigue damage (ie damage due to multi-level loading) than would have been possible using conventional experimental methods By estimating the remaining life of a specimen at one stress amplitude before measuring the equivalent remaining life at a second stress amplitude by cycling to failure, it was possible to determine lines of equal damage on a plot of stress amplitude versus remaining fatigue life These lines of equal damage were used to predict the fatigue lives of specimens subjected to programmes of multi-level loading, and the accuracy of these estimates, when co

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825 citations

Proceedings Article•DOI•

Gear single tooth bending fatigue test

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