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Journal articles on the topic 'Isotropic cyclic hardening'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Mendes Lima, Rodrigo, and Ernesto Massaroppi Jr. "Study of Aluminum Alloy 7050 T7451 Isotropic Hardening." Materials Science Forum 869 (August 2016): 526–31. http://dx.doi.org/10.4028/www.scientific.net/msf.869.526.

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This paper presents the yielding surface isotropic hardening study of the aluminum alloy 7050 T7451 submitted to monotonic loadings, considering the nonlinear constitutive model proposed by Voce. The stress state imposed characterizes a behavior whose plastic deformations cannot be neglected. The analysis depends on the segregation between the isotropic and the kinematic hardening that composes the material’s behavior during its transient life. Monotonic and cyclic tension-compression tests have been realized in order to allow the Bauschinger Effect understanding. The results have been compare

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12

Mohamad, Jasri, and Mohd Zaidi Sidek. "Springback Prediction Using Finite Element Simulation Incorporated With Hardening Data Acquired From Cyclic Loading Tool." International Journal of Materials Forming and Machining Processes 6, no. 1 (2019): 19–39. http://dx.doi.org/10.4018/ijmfmp.2019010102.

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The aims of this article are to present the accuracy of springback prediction in U-bending sheet metal forming processes using finite element (FE) simulation incorporated with kinematics or mixed hardening parameters that are derived from cyclic data provided by the developed cyclic loading tool. The FE simulation results in the form of springback angles are compared with the experimental results for validation. It was found that the mixed hardening model provides better simulation results in predicting springback. This is due to the capability of the isotropic hardening part of this model to

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13

Moosbrugger, J. C., and D. L. McDowell. "On a Class of Kinematic Hardening Rules for Nonproportional Cyclic Plasticity." Journal of Engineering Materials and Technology 111, no. 1 (1989): 87–98. http://dx.doi.org/10.1115/1.3226439.

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Two surface theories for rate-independent plasticity have previously been shown to offer superior correlative capability in modeling material response under non-proportional loading. In this study, a class of kinematic hardening rules characterized by a decomposition of the total kinematic hardening variable is discussed. The concept of generalized image point hardening in conjunction with mulitple loading surface interpretations is presented. The ability of this class of rules to correlate experimental data from stable nonproportional cycling of Type 304 stainless steel at room temperature is

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14

Teruna, Daniel R., Taksiah A. Majid, and Bambang Budiono. "Numerical Models of Hysteretic Steel Damper with a Hollow Diamond Shape for Energy Dissipation." Applied Mechanics and Materials 802 (October 2015): 243–48. http://dx.doi.org/10.4028/www.scientific.net/amm.802.243.

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Numerical studies were conducted to evaluate the behaviour of a hollow diamond shaped hysteretic steel plate damper under in-plane cyclic loading. The combine hardening material model based on Chaboche kinematic hardening rule and exponential isotropic hardening rule was proposed to trace the cyclic hardening behaviour of the steel damper. For engineering design purposes, simplified models based on bilinear and trilinear models were also presented. Numerical results showed that hysteretic curve obtained from Chaboche model and the simplified models correlate well with experimental results. Fur

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15

Paygozar, Bahman, S. A. Dizaji, and M. A. Saeimi Sadigh. "Combined hardening parameters of steel CK45 under cyclic strain-controlled loading: Calibration methodology and numerical validation." Journal of Mechanical Engineering and Sciences 14, no. 2 (2020): 6848–55. http://dx.doi.org/10.15282/jmes.14.2.2020.24.0536.

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This study is to indicate the methodology of investigating the behavior of materials in the plastic domain while bearing cyclic loading i.e. low cycle fatigue. Materials under such loading, which experience huge amount of plastic deformation, are affected by the hardening or softening effects of loading which should be taken into account in all applications and numerical simulations as well. This work investigates the methodology of obtaining the nonlinear isotropic and kinematic hardening of steel CK45. To find the parameters of the above mentioned combined nonlinear isotropic/kinematic harde

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16

Olfa, Daghfas, Znaidi Amna, Gahbiche Amen, and Nasri Rachid. "Identification of the anisotropic behavior of an aluminum alloy subjected to simple and cyclic shear tests." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 3 (2018): 911–27. http://dx.doi.org/10.1177/0954406218762947.

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The main purpose of this paper is to study the behavior of the 2000 aluminum alloy series used particularly in the design of Airbus fuselage. The characterization of the mechanical behavior of sheet metal on 2024 aluminum alloy and its response to various loading directions under monotonic and cyclic tests are extremely considered. To solve this problem, first, an experimental platform which essentially revolves around mechanical tests and then a series of optical and transmission electronic visualizations have been carried out. These mechanical tests are monotonic and cyclic shear tests appli

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17

Srnec Novak, Jelena, Francesco De Bona, and Denis Benasciutti. "An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve." Metals 9, no. 9 (2019): 950. http://dx.doi.org/10.3390/met9090950.

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This work presents a new isotropic model to describe the cyclic hardening/softening plasticity behavior of metals. The model requires three parameters to be evaluated experimentally. The physical behavior of each parameter is explained by sensitivity analysis. Compared to the Voce model, the proposed isotropic model has one more parameter, which may provide a better fit to the experimental data. For the new model, the incremental plasticity equation is also derived; this allows the model to be implemented in finite element codes, and in combination with kinematic models (Armstrong and Frederic

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18

Jenitha, Ganapathy, Manickam Saravanan, Sangaraju Vishnuvardhan, Gopala Setty Raghava, and Venkatraman Naresh Babu. "Evaluation of Cyclic Hardening Parameters for Type 304LN Stainless Steel." Applied Mechanics and Materials 592-594 (July 2014): 1200–1204. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.1200.

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Engineering components are often subjected to cyclic load excursions beyond elastic limit and hence cyclic plastic deformation of engineering materials becomes inevitable. Since the resultant elastic-plastic stress-strain response of the material plays a pivotal role in analysis, design and failure of the component, it becomes important to understand the cyclic plastic deformation behaviour of engineering materials. Also, cyclic hardening parameters are required in the design of structural components subjected to large plastic deformation. Constitutive equations were proposed by Prager, Armstr

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19

Mizuno, M., Y. Mima, M. Abdel-Karim, and N. Ohno. "Uniaxial Ratchetting of 316FR Steel at Room Temperature— Part I: Experiments." Journal of Engineering Materials and Technology 122, no. 1 (1999): 29–34. http://dx.doi.org/10.1115/1.482761.

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Uniaxial ratchetting characteristics of 316FR steel at room temperature are studied experimentally. Cyclic tension tests, in which maximum strain increases every cycle by prescribed amounts, are conducted systematically in addition to conventional monotonic, cyclic, and ratchetting tests. Thus hysteresis loop closure, cyclic hardening and viscoplasticity are discussed in the context of constitutive modeling for ratchetting. The cyclic tension tests reveal that very slight opening of hysteresis loops occurs, and that neither accumulated plastic strain nor maximum plastic strain induces signific

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20

Halama, Radim, Jana Bartecká, and Petr Gál. "FE Prediction and Extrapolation of Multiaxial Ratcheting for R7T Steel." Key Engineering Materials 810 (July 2019): 76–81. http://dx.doi.org/10.4028/www.scientific.net/kem.810.76.

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Wear of materials in rail/wheel industry is closely related to the cyclic creep. This contribution presents main results of experimental testing on R7T wheel steel. The cyclic creep is investigated under non-proportional loading conditions simulating a line rolling contact case. McDowell extrapolation was successfully applied to the calculation of twist. Cyclic material model MAKOC and MAKOC with memory surface were used for cyclic creep prediction. The plasticity model is based on AbdelKarim-Ohno kinematic hardening and Calloch isotropic hardening rules. Second material model was extended wit

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21

Wang, Yuanqing, and Zhongxing Wang. "Experimental Investigation and FE Analysis on Constitutive Relationship of High Strength Aluminum Alloy under Cyclic Loading." Advances in Materials Science and Engineering 2016 (2016): 1–16. http://dx.doi.org/10.1155/2016/2941874.

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Experiments of 17 high strength aluminum alloy (7A04) specimens were conducted to investigate the constitutive relationship under cyclic loading. The monotonic behavior and hysteretic behavior were focused on and the fracture surface was observed by scanning electron microscope (SEM) to investigate the microfailure modes. Based on Ramberg-Osgood model, stress-strain skeleton curves under cyclic loading were fitted. Parameters of combined hardening model including isotropic hardening and kinematic hardening were calibrated from test data according to Chaboche model. The cyclic tests were simula

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22

Kerkour-El Miad, Abdelhamid, A. Kerour-El Miad, and Redouane Kouddane. "Grain Shape Effect and the Viscoplastic Parameter on the Evolution of Isotropic and Kinematic Hardening of Metallic Materials under Cyclic Loading." Key Engineering Materials 820 (September 2019): 48–59. http://dx.doi.org/10.4028/www.scientific.net/kem.820.48.

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The main objective of this work is to study the grain shape effect (aspect ratio α = a / b) and the viscoplastic parameter γ on the evolution of the kinematic and isotropic hardening of FCC type metallic materials, under uniaxial cyclic Tension-Compression ‘‘TC’ and to interpret these results. These parameters of shape and viscoplastic were developed and introduced by Abdul-Latif and Radi, indeed in this study we use their model. Expressed within the framework of a self-consistent approach, the rate-dependent inelastic strain is examined at the crystallographic slip system level describing a c

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Mohd Tobi, Abdul Latif, M. Y. Ali, M. H. Zainulabidin, and A. A. Saad. "Modelling of Fretting Wear under Partial Slip Conditions Using Combined Isotropic-Kinematic Hardening Plasticity Model." Advanced Materials Research 1025-1026 (September 2014): 50–55. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.50.

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This paper presents finite element modelling of fretting wear under partial slip conditions using combined isotropic-kinematic hardening plasticity model with the emphasized to investigate the cyclic-plasticity behaviour predicted under fretting condition. The model is based on two-dimensional (2D) cylinder-on-flat contact configuration of titanium alloy, Ti-6Al-4V. A number of wear profiles at specific number of wear cycle (6000th, 60000th, 150000th and 300000th) are simulated. Contact pressure, tangential stress, shear stress, equivalent plastic strain, tangential plastic strain and also she

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McDowell, D. L. "A Two Surface Model for Transient Nonproportional Cyclic Plasticity, Part 1: Development of Appropriate Equations." Journal of Applied Mechanics 52, no. 2 (1985): 298–302. http://dx.doi.org/10.1115/1.3169044.

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A two surface stress space model is introduced with internal state variable repositories for fading memory of maximum plastic strain range and non-proportionality of loading. Evolution equations for isotropic hardening variables are prescribed as a function of these internal variables and accumulated plastic strain, and reflect dislocation interactions that occur in real materials. The hardening modulus is made a function of prior plastic deformation and the distance of the current stress point from the limit surface. The kinematic hardening rules of Mroz and Prager are used for the yield and

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25

OHNO, Nobutada. "Material models of cyclic plasticity with extended isotropic hardening: a review." Mechanical Engineering Reviews 2, no. 1 (2015): 14–00425. http://dx.doi.org/10.1299/mer.14-00425.

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26

Slota, Jan, Ivan Gajdos, Emil Spišák, and Marek Šiser. "Springback Prediction of Stretching Process using Finite Element Analysis for DP600 Steel Sheet." Acta Mechanica et Automatica 11, no. 1 (2017): 5–8. http://dx.doi.org/10.1515/ama-2017-0001.

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Abstract Springback phenomenon is well predicted for some mild steel materials, but not for steels with higher strength. One of the most used tools to stamping optimization is usage of finite element analysis. In order to accurate describe the real behaviour of the materials for stamping of vehicle panels, the application of proper hardening rule seems to be crucial. Due to higher accuracy of predicted results, high strength steel sheets are usually modelled by means of kinematic or mixed isotropic-kinematic hardening models. In this paper the springback prediction of advanced high strength st

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27

Floros, Dimosthenis, Andreas Jobst, Andreas Kergaßner, Marion Merklein, and Paul Steinmann. "Towards an holistic account on residual stresses in full-forward extruded rods." Archive of Applied Mechanics 91, no. 8 (2021): 3649–64. http://dx.doi.org/10.1007/s00419-021-01917-1.

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AbstractAn holistic view is attempted towards prediction of the effect of residual stresses induced by full-forward extrusion on fatigue life of workpieces during operation. To study the effect of constitutive model on the accuracy of forming simulations, a combined nonlinear isotropic/kinematic hardening model as well as the isotropic hardening part of the same model are calibrated based on five compression-tension-compression uniaxial stress experiments. A full-forward extrusion finite element model is developed adapting both the aforementioned hardening plasticity models and the predicted r

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Bondar, V. S., D. R. Abashev, and D. Yu Fomin. "A variant of the thermoplasticity theory for monotonic and cyclic processes of nonisothermal loads." PNRPU Mechanics Bulletin, no. 2 (December 15, 2020): 28–36. http://dx.doi.org/10.15593/perm.mech/2020.2.03.

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We revealed some features and differences in isotropic and anisotropic hardening under monotonic and cyclic loads by analyzing the experimental results of the samples made of 12X18H10T stainless steel under a rigid (controlled) deformation process, which includes a sequence of monotonic and cyclic loading modes under uniaxial tension-compression and different temperature levels. To describe these features with the theory of thermoplasticity, which belongs to the class of flow theories for combined hardening, a memory surface is introduced in the space of the plastic strain tensor components th

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Chan, K. S., S. R. Bodner, and U. S. Lindholm. "Phenomenological Modeling of Hardening and Thermal Recovery in Metals." Journal of Engineering Materials and Technology 110, no. 1 (1988): 1–8. http://dx.doi.org/10.1115/1.3226003.

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Modeling of hardening and thermal recovery in metals is considered within the context of unified elastic-viscoplastic theories. Specifically, the choices of internal variables and hardening measures, and the resulting hardening response obtained by incorporating saturation-type evolution equations into two general forms of the flow law are examined. Based on the analytical considerations, a procedure for delineating directional and isotropic hardening from uniaxial hardening data has been developed for the Bodner-Partom model and applied to a nickel-base superalloy, B1900 + Hf. Predictions bas

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Saai, Afaf, Laurent Tabourot, Christophe Déprés, and Herve Louche. "A Fundamental Model of Aluminum Single Crystal Behavior with Physical Description of Kinematic Work Hardening." Materials Science Forum 550 (July 2007): 577–82. http://dx.doi.org/10.4028/www.scientific.net/msf.550.577.

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In this paper, we present a fundamental model of FCC single crystal behaviour at room temperature: this model includes kinematic work hardening derived from the elementary description of the collective dislocations density evolution during cyclic loading. This kinematic work hardening is then coupled with the isotropic work hardening mechanism. Using this original model, a simulation of a tensile test on a single crystal sample is carried out in the case of an initial crystal orientation that promotes single glide even at rather large strains. The evolution of resolved shear stresses on the pr

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Abdul-Latif, A., M. Clavel, V. Ferney, and K. Saanouni. "On the Modeling of Nonproportional Cyclic Plasticity of Waspaloy." Journal of Engineering Materials and Technology 116, no. 1 (1994): 35–44. http://dx.doi.org/10.1115/1.2904253.

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The isotropic hardening is known to play an effective role in the overhardening of materials under nonproportional cyclic loading. However, the behavior of the two states of Waspaloy (namely overaged and underaged states) under these loading conditions, shows that the kinematic hardening has also a considerable role in the overhardening. Experimental tests were carried out on these two states under various proportional and nonproportional cyclic loading conditions at room temperature. The effect of loading paths on micro-mechanisms of deformation was studied. From a microstructural point of vi

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He, Xu, and Yao Yao. "A Dislocation Density-Based Viscoplasticity Model for Cyclic Deformation: Application to P91 Steel." International Journal of Applied Mechanics 10, no. 05 (2018): 1850055. http://dx.doi.org/10.1142/s1758825118500552.

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To describe the viscoplastic behavior of materials under cyclic loading, a dislocation density-based constitutive model is developed based on the unified constitutive theory in which both the creep and plastic strain are integrated into an inelastic strain tensor. The stress evolution during cyclic deformation is caused by the mutual competition and interaction between hardening and recovery. To incorporate the physical mechanisms of cyclic deformation, the change of mobile dislocation density is associated with inelastic stain in the proposed model. The evolution of immobile dislocation densi

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You, Y. "Calculation of drawbead restraining forces with the Bauschinger effect." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 212, no. 7 (1998): 549–53. http://dx.doi.org/10.1243/0954405981515842.

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In this paper, a numerical model for the calculation of the drawbead restraining force is described. The model is formulated using an elastoplastic finite deformation, finite element method. Because of the bending, unbending and reverse bending deformation which occurs as the sheet metal passes through the drawbead, a kinematic hardening constitutive law associated with a description of the cyclic property and the Bauschinger effect is considered. In comparison with experiments, the results based on the kinematic hardening material model proved to be better than those based on the usual isotro

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Chaboche, J. L. "Cyclic Viscoplastic Constitutive Equations, Part I: A Thermodynamically Consistent Formulation." Journal of Applied Mechanics 60, no. 4 (1993): 813–21. http://dx.doi.org/10.1115/1.2900988.

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Cyclic viscoplastic constitutive equations are increasingly used for the inelastic analysis of structures under severe thermomechanical conditions. The purpose of the paper is to show how the classical models can be modified in order to follow the general principles of thermodynamics with internal variables. Using the restrictive framework of standard generalized materials, the state variables associated to various kinds of kinematic and isotropic hardening are selected. The evolution equations for these internal variables are then formulated in a slightly less restrictive form. For each harde

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Li, Zhou, and Haixiao Liu. "An isotropic-kinematic hardening model for cyclic shakedown and ratcheting of sand." Soil Dynamics and Earthquake Engineering 138 (November 2020): 106329. http://dx.doi.org/10.1016/j.soildyn.2020.106329.

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Halama, Radim, Jaromír Fumfera, Petr Gál, Tadbhagya Kumar, and Alexandros Markopoulos. "Modelling the Strain Range Dependent Cyclic Hardening of SS304 and 08Ch18N10T Stainless Steel with a Memory Surface." Metals 9, no. 8 (2019): 832. http://dx.doi.org/10.3390/met9080832.

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This paper deals with the development of a cyclic plasticity model suitable for predicting the strain range dependent behavior of austenitic steels. The proposed cyclic plasticity model uses the virtual back-stress variable corresponding to a cyclically stable material under strain control. This new internal variable is defined by means of a memory surface introduced in the stress space. The linear isotropic hardening rule is also superposed. First, the proposed model was validated on experimental data published for the SS304 material (Kang et al. Constitutive modeling of strain range dependen

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Kim, K. T., and Y. S. Kwon. "Elastic-Plastic Response of Sintered Porous Iron Under Uniaxial Strain Cycling." Journal of Engineering Materials and Technology 115, no. 1 (1993): 89–94. http://dx.doi.org/10.1115/1.2902162.

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Elastic-plastic responses of porous iron under uniaxial strain cycling between two fixed values of strain are investigated. A special set of constitutive equations is formulated by including isotropic, kinematic and saturation hardening responses. The theoretical results from the constitutive equations are compared with experimental cyclic data for porous iron, with various porosities.

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Li, Chen, Hu, Wang, and Liu. "Accumulation of Pore Pressure in a Soft Clay Seabed around a Suction Anchor Subjected to Cyclic Loads." Journal of Marine Science and Engineering 7, no. 9 (2019): 308. http://dx.doi.org/10.3390/jmse7090308.

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A suction anchor is an appealing anchoring solution for floating production. However, the possible effects of residual pore pressure can be rarely found any report so far in term of the research and design. In this study, the residual pore pressure distribution characteristics around the suction anchor subjected to vertical cyclic loads are investigated in a soft clay seabed, and a three-dimensional damage-dependent bounding surface model is also proposed. This model adopts the combined isotropic-kinematic hardening rule to achieve isotropic hardening and kinematic hardening of the boundary su

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Sun, Guoqin, Yicheng Guo, Xiuquan Han, Deguang Shang, and Shujun Chen. "Fatigue Modeling Containing Hardening Particles and Grain Orientation for Aluminum Alloy FSW Joints." Materials 12, no. 12 (2019): 2024. http://dx.doi.org/10.3390/ma12122024.

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The macro-mesoscopic joint fatigue model containing hardening particles and crystal characteristics is established to study the effect of the hardening particles and the grain orientation on fatigue properties of an aluminum alloy friction stir welding (FSW) joint. The macroscopic model is composed of the weld nugget zone, thermo-mechanically affected zone, heat-affected zone, and base material, according to the metallurgical morphology and hardness distribution of the joint. Cyclic stress and strain data are used to determine the material properties. The fatigue parameters used in the calcula

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Tong, Van-Canh, and Duc-Toan Nguyen. "A study on spring-back in U-draw bending of DP350 high-strength steel sheets based on combined isotropic and kinematic hardening laws." Advances in Mechanical Engineering 10, no. 9 (2018): 168781401879743. http://dx.doi.org/10.1177/1687814018797436.

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In this article, a numerical model for predicting spring-back in U-draw bending of DP350 high-strength steel sheet was presented. First, the hardening models were formulated based on combined isotropic–kinematic hardening laws, along with the traditional pure isotropic and kinematic hardening laws. A simplified method was proposed for determining the material parameters. Comparison of stress–strain curves of uniaxial tests at various pre-strains predicted by the numerical models and experiment showed that the combined isotropic–kinematic hardening model could accurately describe the Bauschinge

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Taleb, Lakhdar. "On the Cyclc Behavior of 304L and 316L Stainless Steels." Key Engineering Materials 535-536 (January 2013): 201–4. http://dx.doi.org/10.4028/www.scientific.net/kem.535-536.201.

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This work is devoted to a survey of the ratcheting phenomenon and follows the study presented in [1]. Two current austenitic stainless steels 304L and 316L are considered and tested under cyclic stress and strain control at 350°C. Under stress control ratcheting seems very small under proportional as well as non-proportional stress control. The elastic shakedown steady state exhibited by both materials may be explained by their capabilities to develop very significant cyclic hardening (especially isotropic) at 350°C.

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Fumfera, Jaromír, Radim Halama, Radek Procházka, Petr Gál, and Miroslav Španiel. "Strain Range Dependent Cyclic Hardening of 08Ch18N10T Stainless Steel—Experiments and Simulations." Materials 12, no. 24 (2019): 4243. http://dx.doi.org/10.3390/ma12244243.

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This paper describes and presents an experimental program of low-cycle fatigue tests of austenitic stainless steel 08Ch18N10T at room temperature. The low-cycle tests include uniaxial and torsional tests for various specimen geometries and for a vast range of strain amplitude. The experimental data was used to validate the proposed cyclic plasticity model for predicting the strain-range dependent behavior of austenitic steels. The proposed model uses a virtual back-stress variable corresponding to a cyclically stable material under strain control. This internal variable is defined by means of

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Zhu, Jie, Shang Yu Huang, Wei Liu, and Xi Fan Zou. "Semi-Analytical or Inverse Identification of Yoshida-Uemori Hardening Model." Key Engineering Materials 775 (August 2018): 531–35. http://dx.doi.org/10.4028/www.scientific.net/kem.775.531.

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The Yoshida-Uemori combined kinematic and isotropic hardening model is widely applied to numerical prediction of spring-back during sheet metal forming process. With the experimental plastic behavior of aluminum alloy AA5182-O sheet under single cyclic loading, the semi-analytical method was presented to calibrate the parameters of Yoshida-Uemori hardening model. Meanwhile, an inverse identification method was suggested by parameter optimization for minimizing the error between the experimental and predicted results. By comparing the two methods, the Yoshida-Uemori hardening model identified b

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Hardy, S. J., and A. R. Gowhari-Anaraki. "Elastic-plastic finite element analysis of hollow tubes with axially loaded axisymmetric internal projections." Journal of Strain Analysis for Engineering Design 28, no. 3 (1993): 187–96. http://dx.doi.org/10.1243/03093247v283187.

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The finite element method is used to study the monotonic and cyclic elastic-plastic stress and strain characteristics of hollow tubes with axisymmetric internal projections subjected to monotonic and repeated axial loading. Two geometries having low and high elastic stress concentration factors are considered in this investigation, and the results are complementary to previously published data. For cyclic loading, three simple material behaviour models, e.g., elastic-perfectly-plastic, isotropic hardening, and kinematic hardening are assumed. All results have been normalized with respect to ma

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Kumar, A. M., G. T. Hahn, V. Bhargava, and C. Rubin. "Elasto-Plastic Finite Element Analyses of Two-Dimensional Rolling and Sliding Contact Deformation of Bearing Steel." Journal of Tribology 111, no. 2 (1989): 309–14. http://dx.doi.org/10.1115/1.3261915.

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In the past, the mechanics of repeated rolling and sliding contact could only be treated for the idealized, elastic-perfectly-plastic (and isotropic) cyclic materials behavior, albeit approximately. They have not proven useful because the real cyclic plastic behavior of contacting materials is anything but perfectly plastic or isotropic. Using finite element methods, the authors have developed techniques for treating elastic-linear-kinematic hardening-plastic (ELKP) behavior, an idealization that comes much closer to the behavior of low, medium, and high hardness steels. In an earlier paper, t

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Tian, Jun, Jian Li, Hai Xie, Yu Yang, and Qianhua Kan. "Finite Element Implementation of a Temperature-Dependent Cyclic Plastic Model for SA508-3 Steel." Metals 8, no. 11 (2018): 955. http://dx.doi.org/10.3390/met8110955.

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A new temperature-dependent cyclic plastic model, combining the nonlinear cyclic softening and kinematic hardening rules is established for a nuclear material of SA508-3 steel. A modified isotropic hardening rule is proposed to capture the temperature-dependent cyclic softening, and a modified kinematic hardening rule is established to improve the prediction of the ratcheting behavior by introducing an exponential function related to the accumulated plastic strain. The stress is updated by the radial return mapping algorithm based on the backward Euler integration. A new expression of consiste

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Kourousis, Kyriakos I. "A Cyclic Plasticity Model for Advanced Light Metal Alloys." Applied Mechanics and Materials 391 (September 2013): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.391.3.

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Advanced light metals have recently attracted the interest of the aerospace and automotive industry. The need for accurate description of their cyclic inelastic response under various loading histories becomes increasingly important. Cyclic mean stress relaxation and ratcheting are two of the phenomena under investigation. A combined kinematic isotropic hardening model is implemented for the simulation of the behavior of Aluminum and Titanium alloys in uniaxial mean stress relaxation and ratcheting. The obtained results indicate that the model can perform well in these cases. This preliminary

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Zhao, K. M., and J. K. Lee. "Generation of Cyclic Stress-Strain Curves for Sheet Metals." Journal of Engineering Materials and Technology 123, no. 4 (2000): 391–97. http://dx.doi.org/10.1115/1.1395021.

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The main objective of this paper is to obtain the first few stress-strain loops of sheet metals from reverse loading so that the springback can be simulated accurately. Material parameters are identified by an inverse method within a selected constitutive model that represents the hardening behavior of materials subjected to a cyclic loading. Three-point bending tests are conducted on sheet steels (mild steel and high strength steel). Punch stroke, punch load, bending strain, and bending angle are measured directly during the tests. Bending moments are then computed from these measured data. B

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Silvestre, Elena, Eneko Sáenz de Argandoña, Lander Galdos, and Joseba Mendiguren. "Comparison of Three Methods for Material Hardening Parameter Identification under Cyclic Tension-Compression Loadings: Roll Levelling Case Study." Key Engineering Materials 651-653 (July 2015): 957–62. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.957.

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The roll levelling is a forming process used to remove the residual stresses and imperfections of metal strips by means of plastic deformations. The process is especially important to avoid final geometrical errors when coils are cold formed or when thick plates are cut by laser. In the last years, and due to the appearance of high strength materials such as Ultra High Strength Steels, machine design engineers are demanding a reliable tool for the dimensioning of the levelling facilities. In response to this demand, Finite Element Analysis is becoming an important technique able to lead engine

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De Jesus, Abı´lio M. P., Alfredo S. Ribeiro, and Anto´nio A. Fernandes. "Finite Element Modeling of Fatigue Damage Using a Continuum Damage Mechanics Approach." Journal of Pressure Vessel Technology 127, no. 2 (2005): 157–64. http://dx.doi.org/10.1115/1.1858927.

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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 nonlinear finite element code in conjunction with a constit

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