Low cycle fatigue test and enhanced lifetime estimation of high-strength steel S550 under different strain ratios

Feng, Liuyang; Qian, Xudong

doi:10.1016/j.marstruc.2018.06.011

Cited by 46 publications

(18 citation statements)

References 40 publications

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“…The experimental fatigue data of aluminum alloy 2124-T851 [31] and 7050-T7451 [32], high-strength steel S550 [33], and magnesium alloy AM30 [34,35] were extracted from related literature. For the test material 45 steel [36], a low-cycle fatigue test was performed to obtain the corresponding fatigue life data.…”

Section: Test Conditionsmentioning

confidence: 99%

Research on low cycle fatigue life prediction considering average strain

Peng

Liu

et al. 2022

Mater. Res. Express

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To address the difficult problems in the study of the effect of average strain on fatigue life under low-cycle fatigue loads, the effect of average strain on the low-cycle fatigue life of materials under different strain cycle ratios was discussed based on the framework of damage mechanics and its irreversible thermodynamics. By introducing the Ramberg-Osgood cyclic constitutive equation, a new low-cycle fatigue life prediction method based on the intrinsic damage dissipation theory considering average strain was proposed, which revealed the correlation between low-cycle fatigue strain life , material properties, and average strain. Through the analysis of the low-cycle fatigue test data of five different metal materials, the model parameters of the corresponding materials were obtained. The calculation results indicate that the proposed life prediction method is in good agreement with the test, and a reasonable characterization of the low-cycle fatigue life under the influence of average strain is realized. Comparing calculations with three typical low-cycle fatigue life prediction models, the new method is within two times the error band, and the prediction effect is significantly better than the existing models, which is more suitable for low-cycle fatigue life prediction. The low-cycle fatigue life prediction of different cyclic strain ratios based on the critical region intrinsic damage dissipation power method provides a new idea for the research of low-cycle fatigue life prediction of metallic materials.

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Section: Test Conditionsmentioning

confidence: 99%

Research on low cycle fatigue life prediction considering average strain

Peng

Liu

et al. 2022

Mater. Res. Express

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“…x(1) -x(2) < 5 ( The disk material is S550 high strength steel. Its chemical composition, mechanical properties, and the damage parameters are shown, respectively, in Table 2 , 3 and 4 [37]. The characteristic length L is 0.5 mm.…”

Section: Numerical Examplementioning

confidence: 99%

“…Constants 𝑐 1 , 𝑐 2 , 𝑐 3 , 𝑐 4 and L are constants from an experimental profound analysis. Many experimental tests have been carried out under charging under controlled deformation [37].…”

Section: Numerical Examplementioning

confidence: 99%

A Novel Approach for Integrating the Optimization of the Lifetime and Cost of Manufacturing of a New Product during the Design Phase

Guini¹,

Barkany²,

Jabri³

et al. 2021

SAE Int. J. Mater. Manf.

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Maximum lifetime and minimum manufacturing cost for new products are the primary goals of companies for competitiveness. These two objectives are contradictory and the geometric dimensions of the products directly control them. In addition, the earlier design errors of new products are predicted, the easier and more inexpensive their rectification becomes. To achieve these objectives, we propose in this article a novel model that makes it possible to solve the problem of optimizing the lifespan and the manufacturing cost of new products during the phase of their design. The prediction of the life of the products is carried out by an energy damage method implemented on the Finite Element (FE) calculation by using the ABAQUS software. The manufacturing cost prediction is carried out by applying the ABC cost estimation analytical method. In addition, the optimization problem is solved by the method of genetic algorithms. The proposed model can be successfully applied for the optimization of new mechanical products made by subtractive manufacturing. The products which mostly benefits from this model are those used in machines and in the automotive or aeronautic fields. The proposed approach can be directly used by the designer for an optimal preliminary design of new products whose manufacture is done by the same company or subcontracted entirely or partially by other companies.

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“…Meanwhile, the high-temperature strength mechanism of P92 steel transforms from lath and dislocation hardening at the initial service stage into the lath and precipitate hardening with service time increasing (Jin et al, 2020). While the following literature survey has been carried out to assess the fatigue properties of high-strength steel by experimental and numerical simulation approaches for different engineering fields, a series of strain-controlled LCF experiments of highstrength steel S550 under different strains were analyzed based on cyclic plastic theory and CDM (Feng and Qian, 2018a). Zarandi et al (Zarandi and Skallerud, 2020) investigated the fatigue properties and cyclic plasticity behavior of mooring chain steel grade R4 to assess the plastic dissipation at the pit sites on a corroded mooring chain link.…”

Section: Introductionmentioning

confidence: 99%

Low-Cycle Fatigue Life Prediction of 10CrNi3MoV Steel and Undermatched Welds by Damage Mechanics Approach

Song

Liu

et al. 2021

Front. Mater.

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Welding of steel is a technique frequently used in practical engineering applications; however, their mechanical performance is strongly dependent on the physical metallurgical status of the weldments. In the present study, fully reversed, strain-controlled low-cycle fatigue (LCF) tests were conducted on 10CrNi3MoV steel and its undermatched weldments with strain amplitudes varying from Δε = ±0.5 to ±1.2%. Both base metal and weldments exhibited softening behavior at the beginning of the cyclic stage. Numerical investigations of cyclic stress–strain evolutions of the materials have been studied by the cyclic plastic model considering nonlinear hardening. The continuous damage mechanics (CDM) theory based on the experimental hysteresis stress–strain energy concept was employed to illustrate LCF failure, including damage initiation and deterioration. The damage mechanics approach calibrates the material parameters from the measured fatigue life for initiation and growth stages. Afterward, the combination of material cyclic plastic parameters and damage parameters was implemented to predict the LCF life. Good agreement can be observed between the experimental results and the FE results based on the CDM approach. Finally, the damage evolution of the materials under different strain amplitudes by this approach was assessed.

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Low cycle fatigue test and enhanced lifetime estimation of high-strength steel S550 under different strain ratios

Cited by 46 publications

References 40 publications

Research on low cycle fatigue life prediction considering average strain

Research on low cycle fatigue life prediction considering average strain

A Novel Approach for Integrating the Optimization of the Lifetime and Cost of Manufacturing of a New Product during the Design Phase

Low-Cycle Fatigue Life Prediction of 10CrNi3MoV Steel and Undermatched Welds by Damage Mechanics Approach

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