Experimental analysis of the ratcheting behavior of linear flow split flanges of HC340LA

Palma, V. De; Tomasella, Alessio; Frendo, Francesco; Sonsino, Cetin Morris; Melz, Tobias

doi:10.1016/j.ijfatigue.2014.01.028

Cited by 7 publications

(10 citation statements)

References 36 publications

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“…It has to be considered that this assumption leads to the disregard of the transient material behaviour, in the tested case represented by the strain softening in fully‐reversed loading conditions. A wide description of HC340LA transient phenomena (strain softening and ratcheting) is reported . The value of the material constants required for the application of the damage parameter based on energy Eq.…”

Section: Resultsmentioning

confidence: 99%

Analysis of different fatigue damage accumulation theories and damage parameters based on experiments with the steel HC340LA

Palma

Tomasella

Frendo

et al. 2016

Materialwissenschaft Werkst

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Unterschiedliche Methoden für die Lebensdauerabschätzung unter variablen Beanspruchungsamplituden wurden basierend auf Versuchen mit Proben aus dem Stahl ZStE340 analysiert und miteinander verglichen. Einige der bekanntesten und am meisten angewendeten Methoden wurden gewählt: der Schädigungsparameter PSWT; der PJ-parameter, basiert auf der Bruchmechanik kurzer Risse; das Non-Linear-Continuous Damage Model (NLCD), basiert auf der Kontinuumsmechanik und der Energieparameter von Ellyin. Jede Methode wurde dargestellt und diskutiert. Die Basis für die Ermittlung der Abschätzungsgüte waren experimentelle Versuchsergebnisse aus ZStE340 Proben im Ausgangszustand und nach dem Spaltprofilierprozess. Der Schädigungsparameter PSWT erwies bessere Ergebnisse und ist für die Lebensdauerabschätzung von ZStE340 geeignet

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Section: Resultsmentioning

confidence: 99%

Analysis of different fatigue damage accumulation theories and damage parameters based on experiments with the steel HC340LA

Palma

Tomasella

Frendo

et al. 2016

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…Both stress amplitude and maximum stress significantly affect the ratcheting deformation, particularly in the high stress region . Generally, σ a is the primary factor that affects the fatigue life, and σ m is the primary factor that affects the ratcheting damage.…”

Section: Ratcheting‐fatigue Life Prediction Model Formulationmentioning

confidence: 99%

“…where ω is a material-dependent constant, which describes the log-log scaling relationship between the strain range to strain rate ratio, or cycle time with the number of cycles to failure. Both stress amplitude and maximum stress significantly affect the ratcheting deformation, particularly in the high stress region 18,20,25,42 . Generally, σ a is the primary factor that affects the fatigue life, and σ m is the primary factor that affects the ratcheting damage.…”

Section: R a T C H E T I N G -F A T I G U E L I F E P R E D I C T I O...mentioning

confidence: 99%

“…In this section, nine sets of experimental data from the literature [16][17][18][19][20][21][22] are introduced to evaluate the prediction accuracy and capability of the proposed model. These test data were obtained under different mean stress condi-tions of 1.25Cr0.5Mo steel at 520 °C and 540 °C, Inconel 718 alloy at 649 °C, ASTM A516 Grade 70 steel, AZ91D Magnesium alloy, Elbrodur-NIB copper alloy, HC340LA steel and SA333 steel.…”

Section: Model Comparison With Test Datamentioning

confidence: 99%

“…Xia et al 17 characterised the separate effects of ratcheting and mean stress on the fatigue behaviour of ASTM A516 Grade 70 steel, where the damage caused by ratcheting was calculated based on the mean ratcheting strain rate and maximum stress. Palma et al 18 observed the cyclic transient behaviour of HC340LA steel alloy, and described a relationship between ratcheting and the loading parameters, where ratcheting was observed in uniaxial stress-control tests under zero mean stress conditions. Lin et al 20 studied the effects of the loading waveform parameters on the low cycle fatigue (LCF) and uniaxial ratcheting behaviour of AZ91D magnesium alloy.…”

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confidence: 99%

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Mean stress and ratcheting corrections in fatigue life prediction of metals

Zhu

Lei

Wang

2017

Fatigue Fract Eng Mat Struct

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Ratcheting occurs easily because of the presence of mean stress during the stress‐control fatigue of engineering components. For ductility exhaustion dominated fatigue failure, a new fatigue life prediction model is developed by introducing the mean ratcheting strain rate to incorporate the effects of ratcheting and mean stress on fatigue life. The prediction accuracy of the proposed model was compared with that of the generalised damage parameter, Xia–Kujawski–Ellyin, Walker and Goswami models. Specifically, the model predictions and tested lives were compared using nine sets of experimental data from the literature. In the statistical analysis of these five models, the proposed model provides the highest accuracy and robust life predictions with the lowest model prediction errors.

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Visco‐Plastic Constitutive Model for Cyclic Responses Simulation and Lifetime Prediction of Hot‐Work Tool Steel H13 at Elevated Temperature

Luo

Wang

et al. 2017

steel research int.

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AISI H13 hot‐work tool steel is extensively used as tool material for the aluminum extrusion process and its working temperature is about 500 °C. It is essential to model cyclic responses and conduct lifetime prediction of H13 reasonably for optimization of the tools. In this study, uniaxial tests are conducted to investigate mechanical properties of H13. It can be observed that the material shows significant rate‐dependence and obvious cyclic softening effects. In addition, the evolution of ratcheting obviously has three stages: gradually decreasing stage, approximately constant stage, and rapidly increasing stage. Considering above‐mentioned characteristics, a modified visco‐plastic constitutive model is proposed to describe the cyclic plasticity responses in the whole lifetime by a combination of modified A‐F kinematic hardening rule and a new proposed isotropic hardening rule. Furthermore, its lifetime is predicted by involving a failure criterion with the critical size of yield surface. Accelerated ratcheting phenomena and peak stress reduction in failure phase are simulated reasonably. In addition, the simulation results of cyclic responses give a good estimation of plastic deformation under cyclic loading conditions. All in all, the comparisons of simulation and experimental results indicate that the proposed constitutive model predicts mechanical properties, as well as lifetime reasonably.

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Experimental analysis of the ratcheting behavior of linear flow split flanges of HC340LA

Cited by 7 publications

References 36 publications

Analysis of different fatigue damage accumulation theories and damage parameters based on experiments with the steel HC340LA

Analysis of different fatigue damage accumulation theories and damage parameters based on experiments with the steel HC340LA

Mean stress and ratcheting corrections in fatigue life prediction of metals

Visco‐Plastic Constitutive Model for Cyclic Responses Simulation and Lifetime Prediction of Hot‐Work Tool Steel H13 at Elevated Temperature

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