Relevant bibliographies by topics / Multilinear Kinematic Hardening Curves

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Academic literature on the topic 'Multilinear Kinematic Hardening Curves'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Multilinear Kinematic Hardening Curves"

1

Venkata, Sai Prashanth Sudula. "Multilinear Isotropic and Multilinear Kinematic Hardening on AZ31 Magnesium Alloy." International Journal of Engineering and Advanced Technology (IJEAT) 10, no. 5 (2021): 259–68. https://doi.org/10.35940/ijeat.E2790.0610521.

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Magnesium and its alloys are turning out to be increasingly more utilized in the aviation and automobile industry due to its low weight. The technology has endured numerous enhancements enabling magnesium alloys to have a mechanical performance close to aluminium alloys and prevention from corrosion. This enables numerous potential applications for magnesium alloys subjected to multiaxial fatigue. To perform the plastic deformation on AZ31 alloy, we have utilised two techniques of multilinear hardening methods. i) isotropic hardening, ii) Kinematic hardening. To come up with an accurate result, we leveraged ANSYS software to perform the simulation with accuracy and precision. on arriving to the conclusion our goal towards analysing the multilinear properties of the AZ31 alloy with two mesh size 0.4 and 0.6mm.
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Sudula, Venkata Sai Prashanth. "Multilinear Isotropic and Multilinear Kinematic Hardening on AZ31 Magnesium Alloy." International Journal of Engineering and Advanced Technology 10, no. 5 (2021): 259–68. http://dx.doi.org/10.35940/ijeat.e2790.0610521.

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Magnesium and its alloys are turning out to be increasingly more utilized in the aviation and automobile industry due to its low weight. The technology has endured numerous enhancements enabling magnesium alloys to have a mechanical performance close to aluminium alloys and prevention from corrosion. This enables numerous potential applications for magnesium alloys subjected to multiaxial fatigue. To perform the plastic deformation on AZ31 alloy, we have utilised two techniques of multilinear hardening methods. i) isotropic hardening, ii) Kinematic hardening. To come up with an accurate result, we leveraged ANSYS software to perform the simulation with accuracy and precision. on arriving to the conclusion our goal towards analysing the multilinear properties of the AZ31 alloy with two mesh size 0.4 and 0.6mm.
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Amalia, Aniendhita Rizki, and Kenshi Ochi. "Kinematic Hardening Model Comparison of Square Hollow Section Under Cyclic Bending." Applied Research on Civil Engineering and Environment (ARCEE) 3, no. 02 (2022): 88–103. http://dx.doi.org/10.32722/arcee.v3i02.4530.

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This study compares the different linearity of the kinematic hardening model of the Square Hollow Section (SHS) under cyclic bending loading. Four specimens of a simple support beam cyclically tested in previous research are listed as hot-rolled, hot-finished, and two cold-formed. Using the bilinear, multilinear, and Chaboche models, each specimen is modeled in kinematic hardening. The variables or node sets for each linearity model are estimated using tensile test data, and Chaboche variables are obtained using the least-square fitting method. Each linearity model for each specimen is built-in FEA using a shell model. The numerical model applied the same cyclic loading history as the previous test. The numerical analysis comparison concluded that Chaboche and the multilinear kinematic model generate the expected result fitted to test hysteresis of cold-formed one and cold-formed 2 SHS, but the bilinear models are not fitted. Moreover, all kinematic models are not fit for the hot-rolled and hot-finished SHS compared to the test hysteresis. So, for hot-rolled and hot-finished SHS, the combined hardening is suggested; there is a possibility it is because of the lower yield ratio that both sections have. Overall, during a cyclic bending analysis of cold-formed SHS, multilinear or Chaboche models are preferable if the data is limited.
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Josefson, B. L., U. Stigh, and H. E. Hjelm. "A Nonlinear Kinematic Hardening Model for Elastoplastic Deformations in Grey Cast Iron." Journal of Engineering Materials and Technology 117, no. 2 (1995): 145–50. http://dx.doi.org/10.1115/1.2804521.

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A kinematic hardening model including an associated flow rule is proposed for elastoplastic deformations in graphitic grey cast iron. Quantitatively good results are obtained when comparing with previously performed biaxial experiments. Use of a nonassociated flow rule is found to result in an undesirable weakening behavior that can be explained as a deficiency with the combination of kinematic hardening and the present choice of yield potential. The model proposed is also extended to include multilinear kinematic hardening. With this model qualitatively good agreement with experimental cyclic results from the literature is obtained. A three-dimensional FE-analysis of a cylinder head for a heavy duty Diesel engine is performed as an application. To predict initiation of thermal fatigue cracks, it is essential to use an elastoplastic material model.
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Zhang, Meijuan, Jose María Benítez, and Francisco Javier Montáns. "Capturing yield surface evolution with a multilinear anisotropic kinematic hardening model." International Journal of Solids and Structures 81 (March 2016): 329–36. http://dx.doi.org/10.1016/j.ijsolstr.2015.11.030.

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Lu, Chao, Yong Lin Kang, and Guo Ming Zhu. "Effect of Nonlinear Kinematic Hardening Model on Draw-Bend Springback Behavior of Dual Phase Steel." Advanced Materials Research 538-541 (June 2012): 448–52. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.448.

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The aim of this study is to evaluate the effects of two nonlinear kinematic hardening models on springback prediction of dual phase steel. Young’s modulus degradation with plastic strain was also considered. Material parameters of both hardening models were identified by fitting the experimental tension-compression-tension stress-strain curves using optimization software LS-OPT. The results showed that the nonlinear kinematic hardening models gave good prediction compared with measured data. And a 2-D draw-bend springback benchmark was applied to assess the material models with identified parameters. The accuracy of springback simulation improved when both kinematic hardening and Young’s modulus degradation were considered. Yoshida model gave the best overall springback prediction in the draw-bend springback of dual phase steel.
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Sanomura, Yukio, and Mamoru Mizuno. "Viscoplastic Constitutive Equation of High-Density Polyethylene." Key Engineering Materials 340-341 (June 2007): 1097–102. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.1097.

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A viscoplastic constitutive equation based on the kinematic hardening creep theory of Malinin-Khadjinsky and the nonlinear kinematic hardening rule of Armstrong-Frederick is formulated to describe the inelastic behavior of high-density polyethylene under various loading. The gentle progress of back stress by the introduction of loading surface in the viscoplastic strain space and smaller material constant under unloading can be expressed. Material constants are identified by various stress-strain curves under compression at constant strain rate and creep curves under compression at constant stress. The viscoplastic model can describe stress-strain curve under compression with change in strain rate and shear stress-strain curve including unloading. The model can qualitatively describe stress-strain curves under compression with changed strain rate including unloading, but it is quantitatively insufficient.
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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 applied under the same conditions on the test specimens of 2024 aluminum alloy. Cyclic shear tests have been carried out in order to show the Bauschinger effect and then the kinematic hardening phenomenon. The hardening curves of the simple shear test showed the Portevin-Le Chatelier effect for all loading directions. Next, the experimental results obtained (Portevin-Le Chatelier and Bauschinger effects) are discussed and analyzed in relation to the microstructure of the studied alloy using an optical microscope and a transmission electron microscope. Thereafter, the plastic anisotropy is modeled using an identification strategy that depends on a plastic criterion, an isotropic hardening law, a kinematic hardening (linear and nonlinear) law, and an evolution law. More precisely, particular attention is paid to the isotropic power Hollomon law, the saturation Voce law, and the saturation Bron law. In the case of the cyclic tests, linear kinematic hardening described by the Prager law and nonlinear kinematic hardening expressed by the Armstrong–Frederick law are introduced. Finally, by smoothing the experimental hardening curves for the various simple and cyclic shear tests, a selection is made in order to choose the most appropriate law for the identification of the material behavior.
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KOBAYASHI, Mineo, and Nobutada OHNO. "314 Fully Implicit Integration for a Plasticity Model Based on Multilinear Kinematic Hardening Rule : Temperature Dependencies and Cyclic Hardening." Proceedings of Conference of Tokai Branch 2000.49 (2000): 159–60. http://dx.doi.org/10.1299/jsmetokai.2000.49.159.

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Ngo, Van-Linh, Changho Lee, Eun-haeng Lee, and Jae-Min Kim. "Semi-Automated Procedure to Estimate Nonlinear Kinematic Hardening Model to Simulate the Nonlinear Dynamic Properties of Soil and Rock." Applied Sciences 11, no. 18 (2021): 8611. http://dx.doi.org/10.3390/app11188611.

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The strain-dependent nonlinear properties of ground materials, such as shear modulus degradation (G/Gmax) and damping, are of significant importance in seismic-related analyses. However, the ABAQUS program lacks a comprehensive procedure to estimate parameters for a built-in model. In this study, a nonlinear kinematic hardening (NKH) model with three back-stress values was used, which allows better fitting to the backbone curves compared to the simplified nonlinear kinematic hardening (SNKH) model previously proposed. Instead of modeling in ABAQUS, a semi-automated procedure was implemented in MATLAB, which can predict shear stress–shear strain hysteretic loops, to find the fitting parameters to the target G/Gmax and/or damping curves. The procedure was applied for three soil and two rock samples, and the results indicate a good match between model and target backbone curves, which proves the application of the procedure and the NKH model in simulating the nonlinear properties of ground materials.
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Conference papers on the topic "Multilinear Kinematic Hardening Curves"

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Hart, James D., Nasir Zulfiqar, Joe Zhou, and Keith Adams. "Extension of a Material Model for Pipeline Steels." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90489.

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Pipeline steel stress-strain curves obtained from tension and compression testing of longitudinally and circumferentially oriented specimens of the pipe wall can be significantly different e.g., the pipe material is anisotropic. The anisotropic behavior can result from the manufacturing process (e.g., due to cold expansion of UOE pipe) and can also be influenced by strain aging effects (e.g., due to heated application of pipe coating materials). As described in previous work, the Mroz multilinear kinematic hardening plasticity theory has the ability to accurately model different types of anisotropic pipe material behavior including relatively “sharp” uniaxial circumferential tension response and relatively well-rounded uniaxial longitudinal tension and compression response. The stress-strain curve fitting is accomplished by essentially selecting the sizes and initial positions of elliptical von Mises yield functions in stress-space. A previously developed and published 8-parameter model is well-suited for fitting a matched pair of longitudinal tension (LT) and hoop tension (HT) stress-strain curves as might typically be available from a strain-based pipeline design project. Fitting a pair of “target” LT-HT stress-strain curves is accomplished using a “2-root” fitting procedure where the roots correspond to locations where the yield functions intercept the stress axes in two-dimensional (longitudinal-hoop) stress space. In this paper, the previously described 8-parameter/2-root fitting procedure is extended to a 10-parameter/3-root fitting procedure for situations where a matched “triple” of pipe steel stress-strain curves are available (e.g., LT, HT and longitudinal compression or LC). This extension allows for analysis of strain-based design conditions using an analytical pipe steel, which provides an accurate representation of the uniaxial longitudinal and circumferential stress-strain response of the pipeline material. This paper reviews the 8-parameter/2-root fitting procedure and outlines the extension to the 10-parameter/3-root fitting approach including example application.
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Peng, Heng, and Yinghua Liu. "Shakedown and Limit Analysis of Kinematic Hardening Piping Elbows Under Inner Pressure and Bending Moments." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21379.

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Abstract The stress compensation method (SCM) for shakedown and limit analysis was previously proposed and applied to elastic-perfectly plastic (EPP) piping elbows. In this paper, the SCM is extended to account for limited kinematic hardening (KH) material model based on the extended Melan’s static shakedown theorem using a two-surface model defined by two hardening parameters: initial yield strength and ultimate yield strength. To validate the extended SCM, a numerical test on a cylinder pipe is performed. The results agree well with ones from literature. Then the extended SCM is applied to the shakedown and limit analysis of KH piping elbows subjected to inner pressure and cyclic bending moments. Various loading combinations are investigated to create the shakedown limit and plastic limit load interaction curves. The effects of the material hardening, angle of the elbow and loading conditions on the shakedown limit and plastic limit load interaction curves are presented and analysed. The present method is incorporated in the commercial software of Abaqus and can be considered as a general computational tool for shakedown analysis of KH engineering structures. The obtained results provide a useful information for the structural design and integrity assessment of practical piping elbows.
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De Jesus, Abi´lio M. P., He´lder F. S. G. Pereira, Alfredo S. Ribeiro, and Anto´nio A. Fernandes. "A Discussion on the Performance of Continuum Plasticity Models for Fatigue Lifetime Assessment Based on the Local Strain Appraoch." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93460.

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This paper presents a discussion on the performance of continuum plasticity models for fatigue lifetime assessment according to the local strain approach. Several cyclic plasticity phenomena such as the cyclic hardening/softening, ratchetting, cyclic mean stress relaxation and non-proportional cyclic hardening require, in general, specialized continuum plasticity models. Continuum plasticity models, available in commercial finite element codes (e.g. ANSYS®), with linear, multilinear and nonlinear kinematic hardening are identified using the experimental information available for a pressure vessel steel — the P355NL 1 steel. The potentialities of these plasticity models to describe the material cyclic behaviour are discussed, limiting the discussion to proportional loading. The plasticity models are applied to evaluate the strain ranges and mean stresses of a nozzle-to-plate connection. Two analysis strategies are applied to extract the strain ranges, namely the Twice Yield (TY) and the Cycle-by-Cycle (CBC) methods. The mean stress is only evaluated using the CBC method since the TY method has been proposed only for evaluation of the strain ranges. It is demonstrated that the TY and CBC methods gives similar results for the linear and multilinear kinematic hardening plasticity models. The plasticity model can have an important effect on the evaluation of the mean stresses and thus on predicted strain-life results, if mean stress effects are taken into account in the local strain approach. Finally, the calculated strain ranges and mean stresses are used in the evaluation of the fatigue life of the nozzle-to-plate connection using a local strain approach, and predictions are compared with available experimental results. The effect of the mean stress is important for long lives and is very dependent on the continuum plasticity model and on the number of cycles modelled in the CBC extraction method. Although differences are observed in the estimation of the strain ranges, using the several plasticity models, relatively small differences in fatigue life estimations were resulted.
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Zhao, K. M., and J. K. Lee. "Generation of Cyclic Stress-Strain Curves for Sheet Metals." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1868.

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Abstract The main objective of this paper is to generate cyclic stress-strain curves for sheet metals 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. Bending moments are also calculated based on a constitutive model. Normal anisotropy and nonlinear isotropic/kinematic hardening are considered. Material parameters are identified by minimizing the normalized error between two bending moments. Micro genetic algorithm is used in the optimization procedure. Stress-strain curves are generated with the material parameters found in this way, which can be used with other plastic models.
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Choi, K. S., and J. Pan. "A Generalized Anisotropic Hardening Rule Based on the Mroz Multi-Yield-Surface Model." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61800.

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In this paper, a generalized anisotropic hardening rule based on the Mroz multi-yield-surface model is derived. The evolution equation for the active yield surface is obtained by considering the continuous expansion of the active yield surface during the unloading/reloading process. The incremental constitutive relation based on the associated flow rule is then derived for a general yield function. As a special case, detailed incremental constitutive relations are derived for the Mises yield function. The closed-form solutions for one-dimensional stress-plastic strain curves are also derived and plotted for the Mises materials under cyclic loading conditions. The stress-plastic strain curves show closed hysteresis loops under uniaxial cyclic loading conditions and the Masing hypothesis is applicable. A user material subroutine based on the Mises yield function, the anisotropic hardening rule and the constitutive relations was then written and implemented into ABAQUS. Computations were conducted for a simple plane strain finite element model under uniaxial monotonic and cyclic loading conditions based on the anisotropic hardening rule and the isotropic and nonlinear kinematic hardening rules of ABAQUS. The results indicate that the plastic response of the material follows the intended input stress-strain data for the anisotropic hardening rule whereas the plastic response depends upon the input strain ranges of the stress-strain data for the nonlinear kinematic hardening rule.
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Brunet, M., F. Morestin, and S. Godereaux. "Non-Linear Kinematic Hardening Identification for Anisotropic Sheet-Metals With Bending-Unbending Tests." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1858.

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Abstract An inverse identification technique is proposed based on bending-unbending experiments on anisotropic sheet-metal strips. The initial anisotropy theory of plasticity is extended to include the concept of combined isotropic and non-linear kinematic hardening. This theory is adopted to characterise the anisotropic hardening due to loading-unloading which occurs in sheet-metals forming processes. To this end, a specific bending-unbending apparatus has been built to provide experimental moment-curvature curves. The constant bending moment applied over the length of the specimen allows to determined numerically the strain-stress behaviour but without Finite Element Analysis Four constitutive parameters have to be identified by an inverse approach. Our identification results show that bending-unbending tests are suitable to model quite accurately the constitutive behaviour of sheet metals under complex loading paths.
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McGuire, Ryan, Ramesh Rajasekaran, Hsu-Kuang Ching, and David Bankston. "Life Prediction With Material Hardening Models for High Temperature Cyclic Loadings." In ASME 2024 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/pvp2024-123509.

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Abstract This study addresses the challenges associated with predicting deformation and cyclic behavior in reactor components operating at elevated temperatures. It explores a potential solution by combining two conventional models to achieve more accurate results. While creep models and isochronous stress-strain curves aid in long-term deformation prediction, cyclic behavior often relies on simplified models such as isotropic and kinematic hardening. This work aims to augment the accuracy and efficiency of inelastic analysis by fine-tuning parameters within a combined isotropic and kinematic hardening model tailored to specific materials. A rigorous validation process was undertaken to ensure reliability, involving comparisons with advanced viscoelastic models. The outcome is a reliable and efficient inelastic model that can be employed to analyze components within TerraPower high-temperature nuclear reactors. The methodology calibrates predetermined percent contributions from a database of material properties derived from strain-controlled tests. An iterative process optimizes isotropic and kinematic hardening values, ensuring convergence that resulted in a precise material model. The proposed approach, leveraging a combination of kinematic and isotropic hardening methods, presents a robust model for engineers to analyze components in high-temperature reactors. This contribution enhances reliability and efficiency in structural design and maintenance, addressing the limitations of traditional models.
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Iwata, Koji, Chuanrong Jin, Yasuhisa Karakida, and Naoto Kasahara. "Applicability of the Multilayer Kinematic Hardening Model to Predict Inelastic Behavior of Piping Systems Under Excessive Seismic Loading." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63216.

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For assessing possible failure of piping structures under excessive seismic loading, dynamic structural analysis methods employing advanced constitutive models need to be established. The multilayer kinematic hardening model for cyclic plasticity, which is applicable up to large strain, was proposed in the previous paper by the authors for carbon steel STS410 (JIS, Japanese Industrial Standard) to represent precisely nonlinear stress-strain relation as well as cyclic hardening, and was validated through its application to quasi-static cyclic bending tests of an elbow. In this paper, the applicability of the model to dynamic analysis of piping systems under earthquake loading is evaluated. An existing simulated earthquake excitation test of a piping system made of carbon steel STPT370 (JIS) is dealt with for validation of the finite element nonlinear dynamic analysis method using the presented model. To emphasize the advantage of this model, analyses using the conventional linear kinematic hardening model are also conducted. The results by the latter model are shown to be highly variable depending on the method of bilinear approximation of stress-strain curves. It is shown that the multilayer kinematic hardening model can predict well inelastic strains in piping systems under excessive earthquakes, which is important for the failure assessment.
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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 of rate independent model is discussed and the constitutive equation of the rate independent plasticity coupled with the damage model are decomposed into the elastic, plastic and damage parts. Return Mapping Algorithm method is used for the correction of the elastoplastic state and for the damage model the algorithm is used according to the governed damage constitutive relation. The effect of the damage phenomenon coupled with the elastoplastic kinematic hardening is studied for deformation and load control loadings.
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Jasoliya, Dhruvin, Adarsh Chaurasia, and Ali Najafi. "Analysis of Temperature and Strain Rate-Dependent Mechanical Behavior of Thermoplastics: a Comparative Study of Multilinear Kinematic Hardening and the Three-Network Material Models." In ASME 2025 Aerospace Structures, Structural Dynamics, and Materials Conference. American Society of Mechanical Engineers, 2025. https://doi.org/10.1115/ssdm2025-152455.

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Abstract This paper investigates the modeling of temperature-dependent mechanical behavior of thermoplastics through the experimental tension-compression and stress relaxation data of HDPE at three different temperatures. J-2-based plasticity models are used extensively for modeling thermoplastics. However, recent advancements in material models based on viscoplasticity formulations, such as the three-network model (TNM), are gaining prominence due to their enhanced capability to predict strain-rate-dependent, temperature-dependent, and non-linear behaviors of thermoplastics with better accuracy and reliability. This study uses temperature-dependent multilinear kinematic hardening (MKIN) and a three-network model (TNM) to predict thermoplastic material mechanical response. Both material models are calibrated based on experimental data. The stress-strain response of cyclic behavior of both material models is compared at different temperatures and strain rates. Further, a parametric study of TNM material model parameters is undertaken to understand the sensitivity and their influence on the material model behavior. Finally, an application use-case simulation of grommet loading-unloading force prediction is performed using both material models at different temperatures. Through grommet simulations, the ability of both material models to predict the mechanical response and permanent deformation of thermoplastics is compared. Overall, the TNM material model demonstrates a significant fidelity gain in predicting the strain rate and temperature-dependent plastic deformations in thermoplastics due to its viscoplastic formulation, in contrast to the J-2 plasticity-based MKIN material model.
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Reports on the topic "Multilinear Kinematic Hardening Curves"

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A REEXAMINATION ON CALIBRATION OF CYCLIC CONSTITUTIVE MODEL FOR STRUCTURAL STEELS. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.267.

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Exquisite calibration of model parameter is crucial for simulation accuracy of cyclic constitutive model. This paper is aiming to clarify the influence of different calibration factors on the calibration results and simulation performances of Chaboche combined isotropic/kinematic hardening constitutive model. The influencing calibration factors include the definition of proof strength point on unloading-reloading path, the definition of unloading elastic modulus, the relative proportion of initial back stress and saturation back stress. Based upon different influencing factors, the Chaboche model parameters of LYP225 steel and Q460 steel are calibrated. Accordingly, the main cyclic behavior curves, including the hysteretic stress-strain curves, the evolutionary curves of stress amplitude and plastic work are simulated. Through analyzing the errors between experimental and simulated results, rational suggestions for the valuation of each influencing factor are provided. By taking these suggestions, the calibration of model parameters are able to yield favorable simulation performances and promising convenience for subsequent comparative studies.
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