Estimation of fatigue life under multiaxial loading by varying the critical plane orientation

Carpinteri, Andrea; Kurek, Marta; Łagoda, Tadeusz

doi:10.1016/j.ijfatigue.2016.10.028

Cited by 36 publications

(31 citation statements)

References 46 publications

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“…Authors use criterion (1) where weighing factors B and K [11] using pure bending and pure torsion can be defined as: (90 2 ) 2cos…”

Section: T the Algorithm Of Fatigue Life Evaluationmentioning

confidence: 99%

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Determination of the critical plane orientation depending on the fatigue curves for bending and torsion

Kurek¹,

agoda²

2017

Frattura Ed Integrità Strutturale

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ABSTRACT. This paper contains a proposition setting out a new way of determining an orientation angle of the critical plane. The applied method involves an analysis of fatigue life results' scatter of several selected materials on the basis of a new criterion of multiaxial fatigue. The expression for the equivalent stress was derived on the basis of pure bending and pure torsion. The paper also contains a verification of the effectiveness of the proposed model by analyzing scatter bands and the value of the ratio of normal to shear stresses.

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“…Authors use criterion (1) where weighing factors B and K [11] using pure bending and pure torsion can be defined as: (90 2 ) 2cos…”

Section: T the Algorithm Of Fatigue Life Evaluationmentioning

confidence: 99%

“…The proposition (8) was derived on the basis of the variability of calculated fatigue strength depending on angle β for several selected materials [11][12][13]. We can note here that formula (4) is based on the ratio of the fatigue life boundaries.…”

Section: T the Algorithm Of Fatigue Life Evaluationmentioning

confidence: 99%

Determination of the critical plane orientation depending on the fatigue curves for bending and torsion

Kurek¹,

agoda²

2017

Frattura Ed Integrità Strutturale

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“…Following the analysis of the variability of the calculated fatigue life that was performed in relation to the value of angle β [10], a new expression was derived in the form: , (6) where:…”

Section: Multiaxial Critical Plane-based Criterionmentioning

confidence: 99%

“…The analysis of the scatter bands of the estimated fatigue life can be applied for this purpose, both in relation to the proposed angle as well as depending on the ratio of the normal to shear stresses. The analysis applied the values of the scatter bands for the particular materials just as it was calculated in [10] for angle β in the range <0°, 45°>. Fig.…”

Section: Scatter Analysis Of Fatigue Lifementioning

confidence: 99%

Verification of new model for determining the critical plane orientation angle

Kurek

2017

E3S Web Conf.

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Abstract. The principal objective of this study is to establish a method which can enable the assessment of fatigue life at the stage of the design and building of machine parts and equipment. The paper contains a description of a manner in which the angle of a critical plane can be determined, which is coupled with its adequate verification. The study in the paper is based on an assumption of an idea of a critical plane which adopts that the occurrence of a fatigue crack of a material is caused by the occurrence of strain in the critical plane of a material. The conclusion from this study takes the form of a comparison between the experimental and calculated results performed by adoption of the developed model. The results demonstrate satisfactory level of conformity between the two.

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“…Twenty critical locations, exhibiting high stress levels, were seen to exist at the root of the junctions between the journals and their corresponding webs. As one may expect, these stresses are elastic in nature and hence they can be used to predict the possibility of fatigue failure by applying stress-based high 1 Corresponding author: tiagocastrobl@gmail.com cycle fatigue criteria [1][2][3][4][5][6][7] at critical locations, where fatigue damage is capable of initiating. Although the stress components acting at a given point are synchronous, they are generally out of phase and hence applying a failure criterion using individual stress amplitudes and mean stress values is seen to be a difficult task.…”

Section: Introductionmentioning

confidence: 99%

Multiaxial fatigue criteria applied to motor crankshaft in thermoelectric power plants

et al. 2019

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Fatigue failures of motor crankshafts operating in thermoelectric power plants have recently been reported. Stress fields provided by finite element calculations at critical points of a crankshaft that failed in service are used to test the structural integrity of the component. Taking into account the fact that the stresses acting at a given point are most likely out of phase, multiaxial fatigue criteria based on the von Mises stress are considered to be most suitable for predicting the fatigue behavior of the crankshaft. Using the von Mises stress, it was also possible to apply octahedral shear stress-based criteria and the results obtained have indicated that the crankshaft made of DIN 34CrNiMo6 steel should not suffer fatigue failure under the action of the stress fields in question. However, such failures have been occurring and this apparent discrepancy is presented and briefly discussed in the present study.

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Estimation of fatigue life under multiaxial loading by varying the critical plane orientation

Cited by 36 publications

References 46 publications

Determination of the critical plane orientation depending on the fatigue curves for bending and torsion

Determination of the critical plane orientation depending on the fatigue curves for bending and torsion

Verification of new model for determining the critical plane orientation angle

Multiaxial fatigue criteria applied to motor crankshaft in thermoelectric power plants

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