A constitutive model for uniaxial/multiaxial ratcheting behavior of a duplex stainless steel

Do, Vuong Nguyen Van; Lee, Chin-Hyung; Chang, Kyong-Ho

doi:10.1016/j.matdes.2014.08.046

Cited by 32 publications

(10 citation statements)

References 56 publications

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“…In light of this, 3D finite element analysis has become a hot topic of late due to the fact that 3D finite element analysis can deal with these adverse conditions. Three-dimensional finite element analysis has been widely used to predict various effects, such as welding residual stresses, welding deformations, and fatigue loads on structures [25][26][27][28][29][30][31][32][33][34]. These analyses can be employed to predict the safety and economy of a structure prior to its construction.…”

Section: Fe Welding Analysis Proceduresmentioning

confidence: 99%

“…A fully coupled method was used to solve the initiation and propagation of weld fatigue cracks. Meanwhile, the fatigue damage method allowed the fatigue life of the structure to be predicted [28][29][30].…”

Section: D Fatigue Fe Analysismentioning

confidence: 99%

“…The initiation an tion of microcracks were described under the condition of material damage. pled method was used to solve the initiation and propagation of weld fat Meanwhile, the fatigue damage method allowed the fatigue life of the structu dicted [28][29][30].…”

Section: D Fatigue Fe Analysismentioning

confidence: 99%

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Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

et al. 2023

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The construction of new renewable energy infrastructures and the development of new ocean resources continues to proceed apace. In this regard, the increasing size and capacity of offshore wind turbines demands that the size of their accompanying supporting marine structures likewise increase. The types of marine structures utilized for these offshore applications include gravity base, monopile, jacket, and tripod structures. Of these four types, monopile structures are widely used, given that they are comparatively easy to construct and more economical than other structures. However, constant exposure to harsh cyclic environmental loads can cause material deterioration or the initiation of fatigue cracks, which can then lead to catastrophic failures. In this paper, a 3D fatigue finite element analysis was performed to predict both the fatigue life and the crack initiation of a welded monopile substructure. The whole analysis was undertaken in three steps. First, a 3D non-steady heat conduction analysis was used to calculate the thermal history. Second, a thermal load was induced, as an input in 3D elastoplastic analysis, in order to determine welding residual stresses and welding deformation. Finally, the plastic strain and residual stress were used as inputs in a 3D fatigue FE analysis in order to calculate fatigue crack initiation and fatigue life. The 3D fatigue finite element analysis was based on continuum damage mechanics (CDM) and elastoplastic constitutive equations. The results obtained from the 3D fatigue finite element analysis were compared with hot spot stresses and Det Norske Veritas (DNV-GL) standards.

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Section: Fe Welding Analysis Proceduresmentioning

confidence: 99%

Section: D Fatigue Fe Analysismentioning

confidence: 99%

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Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

et al. 2023

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“…For better agreement with experimental results, Chaboche (1991), Ohno andWang (1993a, 1993b) proposed modifying the A-F hardening components, where the dynamic recovery terms are activated only when the back stresses approach certain values. The idea of modifying the dynamic recovery term in A-F hardening components is widely used when particular loading programs with uniaxial or multiaxial responses are considered (Abdel-Karim, 2009, 2010, Abdel-Karim and Ohno, 2000, Bari and Hassan, 2000, Chen and Jiao, 2004, Guionnet, 1992, Van Do et al, 2015, Yu et al, 2012, Zhang and Xuan, 2017. A similar feature of these models is that the parameters used to control the ratcheting rate are included in the kinematic hardening rule governing the form of the stress-strain curve shape defining the plastic modulus (Bari and Hassan, 2001).…”

Section: Introductionmentioning

confidence: 99%

New formulation of nonlinear kinematic hardening model, Part II: Cyclic hardening/softening and ratcheting

Okorokov

Gorash

Mackenzie

et al. 2019

International Journal of Plasticity

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The second part of the study presents development of the Dirac delta functions framework to modelling of cyclic hardening and softening of material during cyclic loading conditions for the investigated in Part I low carbon S355J2 steel. A new criterion of plastic strain range change is formulated. This provides more certainty in the cyclic plasticity modelling framework compared to classical plastic strain memorization modelling. Two hardening parameters from the developed kinematic hardening rule are written as functions of both plastic strain range and previously accumulated plastic strain. This representation of hardening parameters is able to accurately match experimental results with different types of loading programs including random loading conditions and considering initial monotonic behavior with yield plateau deformation. Ratcheting behaviour is simulated by the developed cyclic plasticity framework by considering an approximated form of the Dirac delta function for modelling the deviation effect and introducing an additional supersurface for better prediction of ratcheting rate. The proposed cyclic plasticity model requires up to 21 material constants, depending on application. A clear and straightforward calibration procedure, where sets of material constants are determined for each plasticity phenomenon considered, is presented. Application of the model to different materials under various tension-compression and non-proportional axial-torsion cycles shows very close agreement with test results.

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“…This model is applicable in most finite element software in which the nonlinear combined hardening model is supported. Calibration of hardening parameters of materials is usually conducted on specimens exposed to symmetrical cycles, with a constant strain range [14][15][16][17][18][19][20][21]. The resulting parameters are then used in the numerical simulation for solving different engineering problems.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Mild Steel Behaviour under Cyclic Loading with Variable Strain Ranges

Krolo

Grandić

Smolčić

2016

Advances in Materials Science and Engineering

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To simulate the effect of variable strains on steel grades S275 and S355, an experimental displacement control test of plate specimens was performed. Specimens were tested under monotonic and cyclic loading according to the standard loading protocol of SAC 2000. During experimental testing, strain values were measured with an extensometer at the tapered part of the specimen. Strains obtained by the experimental tests are disproportional to the applied displacements at the ends of the specimens. This phenomenon occurs due to the imperfections of the specimen, hardening of the material, and the buckling behaviour that appears in real structures due to the high deformation experienced during earthquakes. Due to the relative simplicity and wide applicability of the Chaboche hardening model of steel, the calibration of hardening parameters based on experimental test results was conducted. For the first time, calibration of steel hardening parameters was performed following the Chaboche procedure to define the cyclic behaviour with variable strain ranges. The accuracy of the hardening model with variable strain ranges, which were simulated using ABAQUS software, was verified using the experimental results.

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A constitutive model for uniaxial/multiaxial ratcheting behavior of a duplex stainless steel

Cited by 32 publications

References 56 publications

Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

New formulation of nonlinear kinematic hardening model, Part II: Cyclic hardening/softening and ratcheting

Experimental and Numerical Study of Mild Steel Behaviour under Cyclic Loading with Variable Strain Ranges

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