Modeling the Bauschinger effect for sheet metals, part II: applications

Chun, B.K.; Kim, H.Y.; Lee, J.K.

doi:10.1016/s0749-6419(01)00047-x

Cited by 86 publications

(40 citation statements)

References 12 publications

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“…the difference in yield stress in tension and compression, is a well known subsequent deformation. This phenomenon must be considered for a precise modeling when forming sheet metals and considering subsequent springback predictions (Chun et al, 2002a, b;Yoshida et al, 2002a, b;Chung et al, 2005;Lee et al, 2005a, b). Mollica et al (2001) developed a general three dimensional model, which can reproduce the stress-strain response at loading reversals and can be applied to more general changes in loading direction.…”

Section: Introductionmentioning

confidence: 99%

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

Mayama

Sasaki

2006

International Journal of Plasticity

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This paper investigates the effects of cyclic preloading on the subsequent viscoplastic deformation. A series of experiments such as the subsequent creep, subsequent stress relaxation, and cyclic loading with strain rate changes after cyclic preloading were conducted with Type 304 stainless steel at room temperature. The cyclic proportional and non-proportional loadings were conducted as cyclic preloadings.Tension-compression loading was chosen as the cyclic proportional loading, and circular and cruciform loading as the cyclic non-proportional loading. The experimental results showed that the subsequent deformation changes with the number of cycles of cyclic preloading. The differences in the subsequent deformation were examined by transmission electron microscopy (TEM). The observations suggest that changes in the dislocation structure depending on the number of cycles of cyclic preloading affect the subsequent viscoplastic deformation.

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Section: Introductionmentioning

confidence: 99%

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

Mayama

Sasaki

2006

International Journal of Plasticity

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“…For instance, a constant blank holder force has to be applied to keep the gap constant: approximately 1.22 and 1.32 mm for the first and second stages, respectively. The friction coefficient is assumed to be uniform and constant for all contacting surfaces and equal to 0.168 [13,14]. The simulation may be performed in 2D because of its axial symmetry and a visco solid 106 element can be used for the sheet.…”

Section: Methods Of Simulationmentioning

confidence: 99%

“…The stress-strain responses during the transient period calculated by Yoshida-Uemori and the IH + NLK (isotropic hardening + nonlinear kinematic) models are different as can be seen in Figure 5 [12]. Chun modified the changes of stress level by isotropic hardening [13,14]. His model can predict the behavior of material better compared to the experimental results.…”

Section: Reverse Plasticity Modelsmentioning

confidence: 96%

An Investigation into the Different Hardening Models in Reverse Forming of Thin Sheets

Kadkhodayan

Mosayebi

2009

Advances in Mechanical Engineering

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This paper discusses a finite element analysis of the Bauschinger effect in the reverse cup drawing process, taken from the NUMISHEET'99 (Gelin and Picart, 1999) benchmark. In order to study the Bauschinger effect, several hardening models are considered such as isotropic, kinematic, and combined forms in the linear and nonlinear cases, including the well-known Yoshida and Chaboche's model. The obtained results have been compared with some experimental results reported in literature. The various factors, namely, normalized axial stress, von Mises stress, and the punch forces, for both first and second stages have been calculated for different materials and thicknesses. Results show that the combined model had acceptable agreement with the empirical data through both stages, while the bilinear models did not show this effectiveness. Generally, the nonlinear kinematic and combined models lead to more accurate results.

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“…The general approach to deal with damage in FEA is to define a parameter ω to characterize material degradation [6]. In the research on the accumulation of damage, a nonlinear damage model is used to definite the material degradation so that the history of stress can be taken into consideration.…”

Section: Theory Backgroundmentioning

confidence: 99%

The simulation and experiment on mechanical properties of materials based on dispersed characters in micro-level

Li¹,

Wang²,

Wang³

2017

Proceedings of the 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017)

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Abstract.To solve the defect of common finite element analysis which cannot imitate the micro-structure and mechanical properties of materials, a new kind of FEA model is founded to simulate the metallic micro-structure based on the dispersed mechanical characters. Some research is performed by this model on the low-cycle fatigue process where top process in the cycle is slightly under the yield stress. Firstly a theory model towards the process of elastic and plastic deformation coupled with damage accumulation is founded. Secondly some simulation is performed by the new FEA model. Finally the simulation is verified by tensile and compressing experiment. The experimental results show that the new FEA model can simulate the deformation of metallic materials in micro-level accurately.

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Modeling the Bauschinger effect for sheet metals, part II: applications

Cited by 86 publications

References 12 publications

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

An Investigation into the Different Hardening Models in Reverse Forming of Thin Sheets

The simulation and experiment on mechanical properties of materials based on dispersed characters in micro-level

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