Damage mechanisms in the ultra-low cycle fatigue loading

Kermajani, M.; Ghaini, F. Malek; Miresmaeili, Reza; Baghi-abadi, M.K.; Mousavinasab, M

doi:10.1016/j.engfracmech.2019.106772

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Based on the loading intensity, three ranges of fatigue life can be classified: ultra-low-, low-, and high-cycle ranges [ 30 , 50 , 51 ]. In the HCF region, the macroscopic deformation behavior of the material is primarily elastic, whereas in the ultra-low and LCF regions, notable plastic deformation evolves.…”

Section: Theory-modelingmentioning

confidence: 99%

“…The number of cycles during which the transition from LCF to HCF develops has been reported to range from a few thousand to tens of thousands, whereas ultra-LCF ranges from tens to hundreds of cycles. Engineering components, such as high-pressure pump housings, shafts, and gears for power transmission, when subjected to abnormally high loadings, are examples of components and structures subjected to ultra-LCF loadings [ 50 , 52 , 53 ].…”

Section: Theory-modelingmentioning

confidence: 99%

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Prediction of Short- to Long-Term Cyclic Deformation Behavior and Fatigue Life of Polymers

Barriere,

Carbillet,

Gabrion

et al. 2024

Polymers

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The prediction of mechanical behavior and fatigue life is of major importance for design and for replacing costly and time-consuming tests. The proposed approach for polymers is a combination of a fatigue model and a governing constitutive model, which is formulated using the Haward–Thackray viscoplastic model (1968) and is capable of capturing large deformations. The fatigue model integrates high- and low-cycle fatigue and is based on the concept of damage evolution and a moving endurance surface in the stress space, therefore memorizing the load history without requesting vague cycle-counting approaches. The proposed approach is applicable for materials in which the fatigue development is ductile, i.e., damage during the formation of microcracks controls most of the fatigue life (up to 90%). Moreover, damage evolution shows a certain asymptote at the ultimate of the low-cycle fatigue, a second asymptote at the ultimate of the high-cycle fatigue (which is near zero), and a curvature of how rapidly the transition between the asymptotes is reached. An interesting matter is that similar to metals, many polymers satisfy these constraints. Therefore, all the model parameters for fatigue can be given in terms of the Basquin and Coffin–Manson model parameters, i.e., satisfying well-defined parameters.

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Section: Theory-modelingmentioning

confidence: 99%

Section: Theory-modelingmentioning

confidence: 99%

Prediction of Short- to Long-Term Cyclic Deformation Behavior and Fatigue Life of Polymers

Barriere,

Carbillet,

Gabrion

et al. 2024

Polymers

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show abstract

“…Kurzzeitermüdung bzw. ultra low cycle fatigue (ULCF) eingeordnet werden kann[12,13]. In[10] wird ein Nachweis gegen Kurzzeit-oder Ultra-Kurzzeitermüdung nicht gefordert.…”

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Grundsätzliche Untersuchungen zum seismischen Verhalten schienengebundener mobiler Großgeräte der Fördertechnik

2021

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Mobile Großgeräte sind für die globale Wirtschaft von großer Bedeutung. Zunehmend werden sie aufgrund immer knapper werdender Rohstoffe in seismisch aktiven Gebieten, in denen noch Vorräte schlummern, eingesetzt. Das seismische Verhalten dieser nicht verankerten Strukturen unterscheidet sich durch die Möglichkeit des Abhebens grundlegend von konventionellen Bauwerken und eine zutreffende und wirtschaftliche erdbebengerechte Auslegung ist nach derzeit geltenden Erdbebennormen weltweit kaum möglich. In diesem Beitrag wird das Verhalten typischer schienengebundener mobiler Großgeräte der Fördertechnik bei Erdbeben am Beispiel von Schaufelradgeräten exemplarisch in seinen Grundsätzen untersucht, analysiert und daraus resultierend grundsätzliche Bemessungsempfehlungen für schienengebundene mobile Großgeräte der Fördertechnik gegeben. Das numerische Berechnungsmodell wird anhand von Schwingungsmessungen an realen Geräten validiert.

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Quantifying reversed loading effects on fracture resistance curve in M(T) specimens using DIC

Chen,

Qian,

Liu

2024

Engineering Fracture Mechanics

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Damage mechanisms in the ultra-low cycle fatigue loading

Cited by 4 publications

References 15 publications

Prediction of Short- to Long-Term Cyclic Deformation Behavior and Fatigue Life of Polymers

Prediction of Short- to Long-Term Cyclic Deformation Behavior and Fatigue Life of Polymers

Grundsätzliche Untersuchungen zum seismischen Verhalten schienengebundener mobiler Großgeräte der Fördertechnik

Quantifying reversed loading effects on fracture resistance curve in M(T) specimens using DIC

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