Modeling of Elastoplastic Stress States in Crack Tip
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Sokolov, S. F.; Tulin, D. E.

doi:10.1134/s1029959921030024

Cited by 7 publications

(11 citation statements)

References 11 publications

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“…The stress-strain state of a small area in front of the crack tip was analyzed to study the stress state of the fracture process zone and its dependence on geometrical and mechanical properties of a part. 16,19 In this zone, the average stresses were calculated, which is why it was called the averaging zone. The size of this zone was arbitrarily determined and varied in a range of r = 0.1-0.5 mm (Figure 1A).…”

Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%

“…To determine the analytical dependence s r k ð Þ, a model of a local cylindrical plastic zone in front of the edge crack tip in a plate subjected to uniaxial loading was studied. 16 If the diameter of this zone is very small compared to the thickness of the plate and the size of the crack, then s r k ð Þ is described by the function:…”

Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%

“…They are determined by finite element analysis. 16,19 Applying the above parameters, the fracture condition ( 1) is expressed as follows:…”

Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%

“…[13][14][15] This methodology uses the model of the fracture process zone loading process for a crack in an elastic-plastic body which was developed earlier. 16 This paper deals with the methodology for determining the parameters of the limit state of the fracture process zone. For this purpose, the results of tests on cracked specimens at negative temperatures are used.…”

Section: Introductionmentioning

confidence: 99%

“…It is based on the application of the generalized brittle fracture theory to the fracture process zone 13–15 . This methodology uses the model of the fracture process zone loading process for a crack in an elastic–plastic body which was developed earlier 16 . This paper deals with the methodology for determining the parameters of the limit state of the fracture process zone.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of the size of the fracture process zone and the cleavage stress in cracked steel parts

Sokolov

Tulin

Vasiliev

2022

Fatigue Fract Eng Mat Struct

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The study is devoted to the development of methods for predicting the brittle fracture of a steel part with a crack. To describe the limit state of the fracture process zone, a mathematical model of the fracture process zone in an elasticplastic stress state and the generalized brittle fracture theory have been used.The cleavage stress and the size of the fracture process zone are used as parameters for the fracture toughness of the material. A finite element analysis approach was developed to determine these parameters by considering the elastic-plastic stress state of cracked specimens. An analytical procedure for calculating the above parameters for low-carbon and low-alloy steels is given.The proposed models allow the analytical calculation of critical values of the stress intensity factor for specimens with cracks at negative temperatures. The development of this study is linked to the improvement of the technology for determining the physical strength criteria of materials. The application of the proposed models makes it possible to create a methodology for predicting crack resistance of welded structures of arctic design considering their geometry and structural and technological characteristics.

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Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%

Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%

“…They are determined by finite element analysis. 16,19 Applying the above parameters, the fracture condition ( 1) is expressed as follows:…”

Section: The Stress State Of the Fracture Process Zonementioning

confidence: 99%