Academic literature on the topic 'Isotropic cyclic hardening'

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Journal articles on the topic "Isotropic cyclic hardening"

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Tsakmakis, Aris, and Michael Vormwald. "Configurational forces in cyclic metal plasticity." MATEC Web of Conferences 300 (2019): 08009. http://dx.doi.org/10.1051/matecconf/201930008009.

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The configurational force concept is known to describe adequately the crack driving force in linear fracture mechanics. It seems to represent the crack driving force also for the case of elastic-plastic material properties. The latter has been recognized on the basis of thermodynamical considerations. In metal plasticity, real materials exhibit hardening effects when sufficiently large loads are applied. Von Mises yield function with isotropic and kinematic hardening is a common assumption in many models. Kinematic and isotropic hardening turn out to be very important whenever cyclic loading hist
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Moosbrugger, J. C. "Anisotropic Nonlinear Kinematic Hardening Rule Parameters From Reversed Proportional Axial-Torsional Cycling." Journal of Engineering Materials and Technology 122, no. 1 (1999): 18–28. http://dx.doi.org/10.1115/1.482760.

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A procedure for determining parameters for anisotropic forms of nonlinear kinematic hardening rules for cyclic plasticity or viscoplasticity models is described. An earlier reported methodology for determining parameters for isotropic forms of uncoupled, superposed Armstrong-Frederick type kinematic hardening rules is extended. For this exercise, the anisotropy of the kinematic hardening rules is restricted to transverse isotropy or orthotropy. A limited number of parameters for such kinematic hardening rules can be determined using reversed proportional tension-torsion cycling of thin-walled
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McDowell, D. L. "A Bounding Surface Theory for Cyclic Thermoplasticity." Journal of Engineering Materials and Technology 114, no. 3 (1992): 297–303. http://dx.doi.org/10.1115/1.2904176.

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A nonisothermal, rate and time independent generalization of nonlinear kinematic hardening theory for cyclic plasticity is introduced. The model includes decomposition of backstress and of isotropic hardening between the yield surface radius and the backstress amplitude. A purely temperature dependent component of yield surface radius is assumed in addition to an isotropic hardening component. Issues of thermoplastic material stability and temperature history independence are clearly distinguished and addressed via implications of temperature rate terms. Correlations are reported for OFHC copp
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Kumar, R. Suresh, P. Chellapandi, and C. Lakshmana Rao. "Modelling Material Behavior of Austenitic Stainless Steel under Monotonic and Cyclic Loadings." Applied Mechanics and Materials 151 (January 2012): 721–25. http://dx.doi.org/10.4028/www.scientific.net/amm.151.721.

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Mechanical behavior of the austenitic stainless steel under monotonic and cyclic loading at room temperature has been mathematically predicted. Materials like SS 316 LN exhibit cyclic hardening behavior under cyclic loading. Based on the characteristics of yield surface, cyclic hardening can be classified into isotropic and kinematic hardening. Armstrong-Frederic model is used for predicting the kinematic hardening of this material. It is basically a five parameter, nonlinear kinematic hardening model. Cyclic tests for various ranges were carried out to derive the isotropic material parameter
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Shakeri, Ashkan. "Isotropic-kinematic cyclic hardening characteristics of plate steels." International Journal of Steel Structures 17, no. 1 (2017): 19–30. http://dx.doi.org/10.1007/s13296-016-0102-z.

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Khdir, Younis Kh. "Analytical and Numerical Investigation of Hardening Behavior of Porous Media." Polytechnic Journal 9, no. 2 (2019): 1–10. http://dx.doi.org/10.25156/ptj.v9n2y2019.pp1-10.

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In this study, a comparative analysis is presented between a new proposed analytical model and numerical results for macroscopic behavior of porous media with isotropic hardening in its matrix. The macroscopic behavior of a sufficiently large representative volume element (RVE), with 200 identical spherical voids, was simulated numerically using finite element method and compared with elementary volume element that contains one void. The matrix of the porous material is considered as elasto-plastic with isotropic hardening obeys exponential law for isotropic hardening. A new parameter was adde
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Taleb, Lakhdar, and Crescent Kpodekon. "Effect of Pre-Deformation on the Cyclic Behavior and Fatigue of 304L SS." Key Engineering Materials 703 (August 2016): 125–31. http://dx.doi.org/10.4028/www.scientific.net/kem.703.125.

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This study deals with the effect of the loading history on the cyclic behavior and the fatigue life of a 304L stainless steel at room temperature. The experiments have been performed using two specimens’ categories. The first one (virgin) has been submitted to only classical fatigue tests while in the second category, prior to the fatigue test; the specimen was subjected to a pre-hardening process under either monotonic or cyclic strain control. Cyclic softening followed by cyclic hardening are observed for the virgin specimens while only cyclic softening is exhibited by the pre-hardened speci
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Doong, S. H., and D. F. Socie. "Constitutive Modeling of Metals Under Nonproportional Cyclic Loading." Journal of Engineering Materials and Technology 113, no. 1 (1991): 23–30. http://dx.doi.org/10.1115/1.2903379.

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A two-surface kinematic hardening model for the stress-strain response of metals under nonproportional tension-torsion cyclic loading is developed and verified with critical experiments. In this model, both the yield and limit surfaces are assumed to be ellipses in the two-dimensional stress plane to account for anisotropic cyclic hardening. Areas of the yield and limit surfaces are changed in order to model the overall isotropic cyclic hardening (or softening) behavior. The strength anisotropy is modeled by changing the ellipticity and orientation of the elliptical surfaces with respect to th
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Yang, Xian Jie. "Constitutive Description of Temperature-Dependent Nonproportional Cyclic Viscoplasticity." Journal of Engineering Materials and Technology 119, no. 1 (1997): 12–19. http://dx.doi.org/10.1115/1.2805966.

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This paper is concerned with the constitutive modeling of the temperature history dependent behavior of metallic materials under uniaxial and nonproportional cyclic loadings. In the study, a class of kinematic hardening rules characterized by a decomposition of the total kinematic hardening variable is discussed. A new nonproportionality is defined. In order to consider the influence of complex cyclic loading and temperature histories on materials behavior, an apparent isotropic deformation resistance parameter Qasm is proposed and the evolution equations of the isotropic deformation resistanc
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McDowell, D. L. "An Evaluation of Recent Developments in Hardening and Flow Rules for Rate-Independent, Nonproportional Cyclic Plasticity." Journal of Applied Mechanics 54, no. 2 (1987): 323–34. http://dx.doi.org/10.1115/1.3173015.

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The Mroz kinematic hardening rule has previously demonstrated superior capability to correlate cyclically stable nonproportional stress-strain response. In this paper, recently proposed kinematic hardening rules for single and multiple surface cyclic plasticity models are evaluated. Significant improvement over the Mroz rule, without loss of generality, is achieved with a deviatoric stress rate-dominated rule proposed by Tseng and Lee for two surface theory. Recent approaches for correlation of the modulus function and isotropic hardening are discussed. The norm of the Mroz distance vector is
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Dissertations / Theses on the topic "Isotropic cyclic hardening"

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Kpodekon, Crescent. "Effet du pré-écrouissage sur la durée de vie d'aciers austénitiques de type 304L." Phd thesis, INSA de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00581715.

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Le travail s'intéresse aux effets de l'histoire de chargement sur le comportement et la durée de vie en fatigue de deux nuances (THYSSEN et CLI)d'un acier inoxydable austénitique 304L à la température ambiante. Les essais ont été réalisés en utilisant deux catégories d'éprouvettes. Les éprouvettes de la première catégorie (vierges) ont été soumises à des essais classiques de fatigue,alors que celles de la deuxième ont subi, avant les essais de fatigue, un pré-écrouissage monotone ou cyclique en déformation imposée. Les éprouvettes vierges manifestent un adoucissement cyclique suivi d'un durcis
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Belattar, Adel. "Analyses multi-échelles du comportement et la durée de vie d’aciers inoxydables 304L sous sollicitations cycliques avec pré-écrouissage." Thesis, Rouen, INSA, 2013. http://www.theses.fr/2013ISAM0004/document.

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Le travail s’intéresse aux effets d’un pré-écrouissage cyclique axial ou en torsion sur le comportement cyclique et la durée de vie en fatigue sous sollicitation axiale à température ambiante d’un acier inoxydable austénitique 304L. Les essais cycliques séquentiels à amplitude de déformation croissante ou décroissante montrent que la courbe cyclique du 304L est non-unique. Cette caractéristique est liée à la persistance de l’état microstructural généré pendant les cycles d’amplitude de déformation maximale de la première séquence. En augmentant le nombre des séquences, l’acier 304L montre une
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Kuprin, Corinna. "Verformungsverfestigung bei zyklisch inkrementeller Torsion von Reineisen und dem Stahl 42CrMo4N." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-103890.

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Die Arbeit widmet sich dem Fließverhalten von Stählen bei zyklisch inkrementeller Torsion. Dazu werden vergleichend Reineisen und der ferritisch-perlitische Stahl 42CrMo4N bei unterschiedlichen Verformungspfaden betrachtet. Vor allem in zyklischen Torsionsversuchen mit bleibendem Verformungsinkrement je Zyklus werden Fließkurvenverläufe und Verformungsverfestigung analysiert. Die Ergebnisse belegen den Einfluss des lamellaren Zementit auf das Fließverhalten des Stahls 42CrMo4N, während die Eigenschaften des Reineisens von der entstehenden Versetzungszellstruktur bestimmt werden. Die Richtungsa
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Sehnal, Dominik. "Nízkocyklová životnost v podmínkách jaderné energetiky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399581.

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Fatique life extension of nuclear powerplants lies in the search for project reserves. This work deals with the evaluation of low-cycle fatigue of nuclear installations of the VVER type and the assessment of the influence of the computational model level. Fatigue tests of austenitic steel using optical method of digital image correlation for which the evaluation procedure is designed and used is performed. Selected model of plasticity with kimenatic (Chaboche) and combinated hardening (Chaboche, Voce) are calibrated from the obtained data. Subsequently, the durability of the test specimen is d
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Kuprin, Corinna. "Verformungsverfestigung bei zyklisch inkrementeller Torsion von Reineisen und dem Stahl 42CrMo4N." Doctoral thesis, 2012. https://monarch.qucosa.de/id/qucosa%3A19830.

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Die Arbeit widmet sich dem Fließverhalten von Stählen bei zyklisch inkrementeller Torsion. Dazu werden vergleichend Reineisen und der ferritisch-perlitische Stahl 42CrMo4N bei unterschiedlichen Verformungspfaden betrachtet. Vor allem in zyklischen Torsionsversuchen mit bleibendem Verformungsinkrement je Zyklus werden Fließkurvenverläufe und Verformungsverfestigung analysiert. Die Ergebnisse belegen den Einfluss des lamellaren Zementit auf das Fließverhalten des Stahls 42CrMo4N, während die Eigenschaften des Reineisens von der entstehenden Versetzungszellstruktur bestimmt werden. Die Richtungs
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Balsas, Andreia Cação. "Modelo constitutivo para previsão do comportamento cíclico da liga 7050-T6." Master's thesis, 2019. http://hdl.handle.net/10316/93629.

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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>Esta dissertação teve como principal objetivo a implementação de um modelo constitutivo que caracterizasse a resposta elastoplástica cíclica da liga de alumínio AA 7050-T6 utilizando o software de elementos finitos ADINA®.A modelação do comportamento cíclico da liga foi feita com base em resultados experimentais obtidos através de ensaios de fadiga oligocíclica efetuados em controlo de amplitude de deformação total, entre 0,6% e 1,75%, e com razões de deformação de -1, 0 e 0,5. O modelo
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Book chapters on the topic "Isotropic cyclic hardening"

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Müthing, Nina, Thomas Barciaga, and Tom Schanz. "On the Use of Isotropic Hardening Plasticity to Model Cyclic Consolidation of Fine Grained Soils." In Holistic Simulation of Geotechnical Installation Processes. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23159-4_7.

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Oka, Fusao, and Sayuri Kimoto. "Simulation of Isotropic Cyclic Compression by an Elasto-viscoplasitc Constitutive Model Based on the Nonlinear Kinematic Hardening Rules." In Springer Series in Geomechanics and Geoengineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32814-5_27.

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MARQUIS, DIDIER. "Cyclic Plasticity Model with Nonlinear Isotropic and Kinematic Hardening: NoLIKH Model." In Handbook of Materials Behavior Models. Elsevier, 2001. http://dx.doi.org/10.1016/b978-012443341-0/50023-5.

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Conference papers on the topic "Isotropic cyclic hardening"

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Eslami, M. R., and H. Mahbadi. "Elastic-Plastic-Creep Cyclic Loading of Structures." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93079.

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In this article, cyclic loading results of structures, such as cylindrical and spherical vessels are investigated. The structure’s material is assumed to be isotropic and homogeneous and obey a nonlinear strain hardening law in the plastic range. Two general plasticity theories, namely the isotropic and kinematic hardening theories with the von Mises associated flow rules are used to evaluate the cyclic results of these structures under various types of mechanical and thermal loads. Prager and Armstrong-Frederick kinematic hardening models are used to simulate the transformation of the yield s
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Nayebi, Ali, and Kourosh H. Shirazi. "Cyclic Loading of Beams Based on Kinematics Hardening Behavior Coupled With Isotropic Damage." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95239.

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The kinematic hardening theory of plasticity based on the Prager model and incremental isotropic damage is used to evaluate the cyclic loading behavior of a beam under the axial, bending, and thermal loads. This allows damage to be path-dependent. The damage and inelastic deformation are incorporated and they are used for the analysis of the beam. The beam material is assumed to follow linear strain hardening property coupled with isotropic damage. The material strain hardening curves in tension and compression are assumed to be both identical for the isotropic material. Computational aspects
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Zhu, Xian-Kui, and Brian N. Leis. "Elastic-Plastic Finite Element Simulation and Fatigue Life Prediction for Beam and Elbow Under Cyclic Loading." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26273.

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Work hardening and Bauschinger effects on plastic deformation and fatigue life for a beam and an elbow under cyclic loading are examined using finite element analysis (FEA). Three typical material plastic hardening models, i.e. isotropic, kinematic and combined isotropic/kinematic hardening models are adopted in the FEA calculations. Based on the FEA results of cyclic stress and strain at a critical location and using an energy-based fatigue damage parameter, the fatigue lives are predicted for the beam and elbow. The results show that (1) the three material hardening models determine similar
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Jung, Hyun-Woo, Yun-Jae Kim, Yukio Takahashi, Kamran Nikbin, Catrin M. Davies, and Robert A. Ainsworth. "The Effect of Cyclic Hardening Model on Deformation Behavior of Cracked Body Under Creep-Fatigue Loading Condition." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21356.

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Abstract In this study, to determine appropriate cyclic hardening model for simulating creep-fatigue crack growth, sensitivity of hardening model on global/local deformation behavior during creep-fatigue crack growth is studied using finite element (FE) debonding analysis method. Three hardening models derived from tensile stress-strain curve to treat large strain near crack are considered in this study: isotropic hardening model, kinematic hardening model and combined hardening model. Simulation results indicate that cyclic hardening model does not make large difference in global deformation
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Krishna, Shree, and Tasnim Hassan. "Constitutive Modeling for Simulating a Broad Set of Uniaxial and Multiaxial Cyclic and Ratcheting Responses." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77816.

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A set of cyclic and ratcheting experimental responses obtained under proportional to various degrees of nonproportional loading cycles are simulated using the modified Chaboche model in its rate-independent and rate-dependent forms. Features of the modified Chaboche nonlinear-kinematic hardening model needed for simulating cyclic hardening-softening, cyclic relaxation and ratcheting responses under uniaxial and multiaxial loading are elaborated. Significance of “rate-dependent” and novel “back stress shift” modeling features in improving the hysteresis loop and ratcheting rate simulations are
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Islam, Nazrul, and Tasnim Hassan. "Improving Simulations for Low Cycle Fatigue and Ratcheting Responses of Elbows." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63353.

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A rate-independent constitutive model is developed incorporating various uniaxial and multiaxial modeling features for improving the simulations of elbow low-cycle fatigue and ratcheting responses. The model development is motivated by the fact that the Chaboche model in ANSYS is unable to simulate the strain ratcheting responses of elbows subjected to internal pressure and opening-closing displacement-controlled cycles. This drawback of the existing model is traced to the isotropic and kinematic hardening modeling features. The isotropic hardening in the Chaboche model can reasonably simulate
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Zait, Y., V. Zolotarevsky, Y. Kligerman, and I. Etsion. "Multiple Normal Loading-Unloading Cycles of a Spherical Contact Under Stick Contact Condition." In STLE/ASME 2010 International Joint Tribology Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ijtc2010-41074.

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The multiple normal loading-unloading process of an elastic-plastic sphere by a rigid flat is analyzed for stick contact condition and both kinematic and isotropic hardening models. The behavior of the global contact parameters as well as the stress field within the sphere tip is presented for several loading cycles. It was found that under stick contact condition secondary plastification occurs even after the second loading cycle and that the hardening model used has little effect on the loading-unloading process. The cyclic loading process gradually converges into elastic shakedown.
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Nayebi, A. "Effect of Nonlinear Kinematic Hardening Constants on Cyclic Spherical Indentation Test." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24005.

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In the last decade, instrumented indentation test has been widely used to determine the mechanical properties of different materials and especially for metals. The mechanical properties such as Young modulus, yield stress, hardening exponent, and stress-strain curve were determined with the help of the load–displacement curve of the continuous indentation test. The method consists of pushing an indenter in a material sample and the applied load and the indenter displacement are measured. In this research the load on the indenter was considered as cyclic and varied from zero to Fmax. Because of
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Zhu, Xian-Kui, and Brian N. Leis. "Structural Integrity Assessment Criteria and Service Life Prediction of Cold Wrinklebends." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90626.

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Three-dimensional elastic-plastic finite element analysis (FEA) is performed in this paper to simulate the complicated stresses and deformation of wrinklebends in a pipeline from its bending formation to operation under cyclic loading. Three plastic hardening models (isotropic, kinematic and combined isotropic/kinematic) are discussed and used in FEA of wrinklebend response that considers strain hardening and Bauschinger effects. The FEA simulation is carried out first for an elbow held at constant pressure while subject to cyclic bending, which serves as a benchmark case. The results show tha
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De Jesus, A. M. P., A. S. Ribeiro, and A. A. Fernandes. "Finite Element Modelling of Fatigue Damage Using a Continuum Damage Mechanics Approach." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2667.

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In this paper, a fatigue model formulated in the framework of the Continuum Damage Mechanics (CDM) is presented. The model is based on an explicit definition of fatigue damage and introduces a kinematic damage differential equation formulated, directly, as a function of the number of cycles and the stress cycle parameters. The model is initially presented for uniaxial problems, which facilitates the identification of its constants. An extension of the fatigue model to multiaxial problems is also proposed. This model was implemented in a non-linear finite element code in conjunction with a cons
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