Elasto-visco-plastic modeling of mild steels for sheet forming applications over a large range of strain rates

Pipard, Jean-Marc; Balan, Tudor; Abed‐Meraim, Farid; Lemoine, Xavier

doi:10.1016/j.ijsolstr.2013.04.022

Cited by 14 publications

(6 citation statements)

References 42 publications

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“…Parameter identification and comparison with experiments. The proposed constitutive model has been previously applied to three different mild steels and compared to tensile tests performed at different strain rates, quasi-static reverse shear tests and two-step sequential loadings [3]. Results showed the ability of the model to capture the main features of elasto-visco-plasticity: the increase of the tensile flow stress with strain rate is well predicted.…”

Section: Experimental Validations and Applicationmentioning

confidence: 99%

Physically-Motivated Elasto-Visco-Plastic Model for the Large Strain-Rate Behavior of Steels

Pipard

Balan

Abed‐Meraim

et al. 2013

KEM

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A physically based elasto-visco-plastic constitutive model is presented and compared to experimental results for three different mild steels. The experiments consist of tensile tests at strain rates up to 103 s-1 and reverse shear tests. The model requires significantly fewer material parameters compared to other visco-plasticity models from the literature while exhibiting very good accuracy. Accordingly, the parameter identification is simple and intuitive, requiring a relatively small set of experiments. The strain-rate sensitivity modeling is not restricted to a particular hardening law and thus provides a general framework in which advanced hardening equations can be adopted. The model was eventually used as the basis for a homogenization approach at the phase scale; preliminary investigations showed the benefit of such an approach, where microstructure-relevant data can explicitly enter the model and may be used for material design simulations.

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Section: Experimental Validations and Applicationmentioning

confidence: 99%

Physically-Motivated Elasto-Visco-Plastic Model for the Large Strain-Rate Behavior of Steels

Pipard

Balan

Abed‐Meraim

et al. 2013

KEM

Self Cite

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“…Dynamic constitutive models use visco-plastic constitutive laws to describe the rate-and thermal-dependent behavior of structural materials. Examples of these models include the Johnson-Cook model for metals subjected to high strain rates and temperatures, 26 the elasto-visco-plastic constitutive model developed by Pipard et al 27 for mild steel and the two-surface model for rate-dependent viscoelasticity for structural steel by Kim and Kim. 28 However, the use of these material models in the current finite element software for system-level analysis is computationally expensive and requires significant implementation effort.…”

Section: Numerical Modelling Of Strain Rate Effectmentioning

confidence: 99%

Impact of loading rate during hybrid simulation on seismic response of steel structures

Huang

Tabkhi

Sadeghian

et al. 2022

Earthq Engng Struct Dyn

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This study investigates the influence of loading rates on the seismic response of steel structures. A series of coupon tests under typical earthquake-induced loading rates are carried out. In addition to the conventional monotonic tension test, the specimens are also tested under a discontinuous loading protocol that is analogous to the ramp-and-hold scheme employed in the pseudo-dynamic hybrid simulations. The test results are used to develop a uniaxial steel material model to account for the strain rate effect and stress relaxation. The material model facilitates the reuse of existing steel hysteresis models and can be used to model different structural components, such as columns, beams, braces, etc. The material model is then used for a parametric study to evaluate the impact of various loading rates on the global seismic response of a single degree of freedom structural system with different structural periods, and types and intensities of ground motions. It is found that the impact of loading rates is more significant for structures with a period of 0.5 s or less and it thus requires a fast control of the physical specimen in pseudo-dynamic hybrid testing. In addition, the material model is applied to a five-storey buckling restrained braced frame (BRBF) building with a structural period of 1.2 s. It is found that the earthquake-induced loading rates have a minor impact on the global response of the structure.

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“…The subsequent behaviour of the flow curve is described by the appropriate hardening rule. [37][38][39][40] The plasticity criteria such as Hill48's model cannot provide an accurate description of the yielding behaviour of anisotropic materials when they are subjected to complex stresses. To overcome this issue, advanced yield functions with high flexibility have been developed, namely the criterion of Barlat, 41 Karafillis and Boyce 42 or Cazacu.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of the plane anisotropy and its effect on interstitial free steel thin sheet metal forming simulation

Arfaoui

Samet

Znaidi

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The main purpose of this paper is to study the orthotropic plastic behaviour of the cold-rolled interstitial free steel HC260Y when it is submitted to various loading directions under monotonic tests. The experimental database included tensile tests carried out on specimens (in the as-received condition and after undergoing an annealing heat treatment) cut in different orientations according to the rolling direction. A model was proposed, depending on a plasticity criterion, a hardening law and an evolution law, which takes into account the anisotropy of the material. To validate the proposed identification strategy, a comparison with the experimental results of the planar tension tests, carried out on specimens cut parallel to the rolling direction, was considered. The obtained results allowed the prediction of the behaviour of this material when it is subjected to other solicitations whether simple or compound.

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Elasto-visco-plastic modeling of mild steels for sheet forming applications over a large range of strain rates

Cited by 14 publications

References 42 publications

Physically-Motivated Elasto-Visco-Plastic Model for the Large Strain-Rate Behavior of Steels

Physically-Motivated Elasto-Visco-Plastic Model for the Large Strain-Rate Behavior of Steels

Impact of loading rate during hybrid simulation on seismic response of steel structures

Characterisation of the plane anisotropy and its effect on interstitial free steel thin sheet metal forming simulation

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