Sequential law in multiaxial fatigue, a new damage indicator

Mesmacque, G.; Garcia, Sérgio Boscato; Amrouche, Abdelwaheb; Rubio-González, C.

doi:10.1016/j.ijfatigue.2004.08.005

Cited by 108 publications

(100 citation statements)

References 4 publications

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“…However, this conclusion is contrary to many researchers' work [16,17] and the experiment results. A reasonable explanation is that this model is for fatigue crack initiation, but not for the crack propagation.…”

Section: Damage Accumulation and Random Fatiguecontrasting

confidence: 99%

An energy-equilibrium model for complex stress effect on fatigue crack initiation

Zhao

Xie

Zhao

et al. 2014

Sci. China Phys. Mech. Astron.

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Based on Tanaka and Mura's fatigue model and Griffith theory for fracture, an energy-equilibrium model was proposed to explain the complex stress effect on fatigue behavior. When the summation of the elastic strain energy release and the stored strain energy of accumulated dislocations reach the surface energy of a crack, the fatigue crack will initiate in materials. According to this model, for multiaxial stress condition, the orientation of the crack initiation and the initiation life can be deduced from the energy equilibrium equation. For the uniaxial fatigue loading with mean stress, the relation between the maximum stress or the minimum stress and the stress amplitude is in agreement with an ellipse equation on the constant life diagram. If the ratio of the mean stress to stress amplitude is less than a critical value 0.17, and the stress amplitude keeps constant, the fatigue crack initiation life will decrease with the increase of the compress mean stress. In this model, the mean stress does not cause damage accumulation with the fatigue cycles in crack initiation. For this reason, the loading sequence of different load levels would induce the cumulative damage to deviate from the Palmgren-Miner cumulative damage rule. The procedure of estimating the damage under random loading is also discussed.

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Section: Damage Accumulation and Random Fatiguecontrasting

confidence: 99%

An energy-equilibrium model for complex stress effect on fatigue crack initiation

Zhao

Xie

Zhao

et al. 2014

Sci. China Phys. Mech. Astron.

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“…A new damage indicator based sequential law [10] is used to obtain a more realistic fatigue life for bridges. The hypothesis behind this fatigue law is that if the physical state of damage is the same, then fatigue life depends only on loading condition.…”

Section: A New Damage Indicator Basedsequential Lawmentioning

confidence: 99%

“…A detailed description of the damage stress model and the definition of damage indicator, D, is described in the corresponding paper [10].…”

Section: Description Of the Modelmentioning

confidence: 99%

“…The Miner's rule has always been acknowledged as a simplification that is easy to use in design where detailed loading history is unknown. But under many variable amplitude loading conditions, life predictions have been found to be unreliable since it did not properly take into account the loading sequence effect [8][9][10]. Therefore, it is uncertain to use the Miner's rule for remaining fatigue life estimation of railway bridges because most of the railway bridges are subjected to variable amplitude loadings.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is uncertain to use the Miner's rule for remaining fatigue life estimation of railway bridges because most of the railway bridges are subjected to variable amplitude loadings. Recently, a new damage indicatorbased sequential law [10] was developed to capture the loading sequence effect of variable amplitude loads more precisely.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Secondary Stress based-Remaining Fatigue Life Estimation of a Riveted Bridge Connection using New Fatigue Criterion

Siriwardane¹

2007

Engineer

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This paper presents a new method to estimate the remaining fatigue lives of riveted connections of railway bridges. The proposed method mainly consists of secondary stress histories, recently developed sequential law and fully known Wohler curve. It is essential to use the fully known Wohler curve. Therefore the technique, which utilizes the transfer of the partially known code given Wohler curve to a fully known curve, is also discussed. Initially the details of new damage indicator based sequential law and it's proposed extension for multiaxial fatigue is described. Secondly the remaining fatigue life of an existing riveted bridge connection is estimated by introducing a new method. Hence validity and merits of the proposed method is confirmed by comparing the results with previous methods-based fatigue lives. ·

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Multi Axial Fatigue in Welded Components

Mesmacque

Robin

et al.

Fracture of Nano and Engineering Materials and Structures

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Sequential law in multiaxial fatigue, a new damage indicator

Cited by 108 publications

References 4 publications

An energy-equilibrium model for complex stress effect on fatigue crack initiation

An energy-equilibrium model for complex stress effect on fatigue crack initiation

Secondary Stress based-Remaining Fatigue Life Estimation of a Riveted Bridge Connection using New Fatigue Criterion

Multi Axial Fatigue in Welded Components

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