Energy driven integration of incremental notch stress-strain approximation for multiaxial cyclic loading

Kraft, Jan; Vormwald, Michael

doi:10.1016/j.ijfatigue.2020.106043

Cited by 10 publications

(12 citation statements)

References 34 publications

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“…Material Used Data Barkey [7] 1070 steel [7] Koettgen et al [8] steel only FEA Langlais [9] 1070 steel [7] Firat [10] 1070 steel [7] Ince et al [11] 1070 steel [7] Ye et al [12] S460N steel [12] Li et al [13] 1070 steel, S460N steel [7,12] Tao et al [14] TC21 titanium alloy, 1070 steel [7,14] Li et al [15] GH4169 superalloy only FEA Kraft [16] steel only FEA…”

Section: Authormentioning

confidence: 99%

“…The aim of the experiments was to measure the notch tip strains, specifically the axial and shear strain components. These components are commonly used to compare estimates with experimental results [7][8][9][10][11][12][13][14][15][16].…”

Section: Experimental Datamentioning

confidence: 99%

“…The common load frequency for the entire test was 0.0417 Hz. Other authors used a similar path to validate their estimates [7,[9][10][11][12][13][14][15][16].…”

Section: Experimental Datamentioning

confidence: 99%

“…The second group of methods [7][8][9][10][11][12][13][14][15][16] deals with cycling loading and incorporates plasticity models to describe cyclic hardening or softening and yield surface movement. Unlike finite-element analyses (FEA), approximate methods do not deal with elastic-plastic stiffness matrices to obtain a solution.…”

Section: Introductionmentioning

confidence: 99%

“…Kraft and Vormwald [16] combined the unified expression of [12] with the Ohno-Wang plasticity model [26]. The integration algorithm used to calculate the elastic-plastic variables was described in depth.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An Approximate Method for Calculating Elastic–Plastic Stress and Strain on Notched Specimens

et al. 2022

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The paper deals with an approximate method for calculating elastic–plastic stresses and strains on the surface of notched samples. The method is based on the Abdel–Karim–Ohno cyclic plasticity model. The plane stress condition is considered within the evaluation. The output of the approximation on several multiaxial axial–torsion load paths is compared to our own experimental results. Experiments were carried out on samples of two notch types manufactured from the 2124-T851 aluminum alloy. Strain distribution in the notch area was measured by digital image correlation. The comparison between computational solution and measured response shows that the new method allows for obtaining reasonably good approximation, even for relatively complicated multiaxial load cases.

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Section: Authormentioning

confidence: 99%

Section: Experimental Datamentioning

confidence: 99%

“…The common load frequency for the entire test was 0.0417 Hz. Other authors used a similar path to validate their estimates [7,[9][10][11][12][13][14][15][16].…”

Section: Experimental Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Approximate Method for Calculating Elastic–Plastic Stress and Strain on Notched Specimens

et al. 2022

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Towards an advanced fatigue assessment of welded steel joints with multiaxial stress states

Steinhoff,

Röscher,

Knobloch

2023

ce papers

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Advanced fatigue assessment methods, e.g. the Two‐Stage‐Model, are needed for the design of complex constructions or to accurately evaluate the remaining fatigue life of existing structures. The applicability of the Two‐Stage‐Model, including strain‐life approach and linear elastic fracture mechanics, was experimentally validated for uniaxial stress states only. However, typical construction details of steel and composite structures often exhibit a multiaxial non‐proportional stress state, which leads to variable principal stress values and directions. Comprehensive extensions of the Two‐Stage‐Model from uniaxial to multiaxial stress states are missing so far. This paper shows a study on advanced approaches that incorporate multiaxial stress states for both the crack initiation stage and the crack propagation stage, and their application in the Two‐Stage‐Model. For crack initiation, several approaches for the strain‐life approach, including multiaxial non‐proportional hardening and damage assessment based on critical planes are evaluated with respect to an application on the strain‐life approach. For the extension of the crack propagation stage, a computational procedure using XFEM and mixed‐mode approaches is presented.

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Fatigue fracture surface metrology of thin-walled tubular austenitic steel specimens after asynchronous loadings

Macek

Pejkowski

Branco

et al. 2022

Engineering Failure Analysis

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Energy driven integration of incremental notch stress-strain approximation for multiaxial cyclic loading

Cited by 10 publications

References 34 publications

An Approximate Method for Calculating Elastic–Plastic Stress and Strain on Notched Specimens

An Approximate Method for Calculating Elastic–Plastic Stress and Strain on Notched Specimens

Towards an advanced fatigue assessment of welded steel joints with multiaxial stress states

Fatigue fracture surface metrology of thin-walled tubular austenitic steel specimens after asynchronous loadings

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