An enhanced Johnson–Cook strength model for splitting strain rate and temperature effects on lower yield stress and plastic flow

Gambirasio, Luca; Rizzi, Egidio

doi:10.1016/j.commatsci.2015.11.034

Cited by 65 publications

(19 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated values of constants are presented in Table 3 for both ultralow and low carbon steel. Majzoobi [217,218] conducted both tensile and compression experiments on two different plain carbon steels with carbon contents of 0.26 and 0.165, respectively, and used a combination of numerical and optimisation approaches to predict the material constants of the Johnson-Cook (JC) [219,220], Zerilli-Armstrong (ZA), and Power-Law-Plasticity (PL) [221] models. The mathematical expression for both the JC model and PL model are described below: Johnson-Cook model:…”

Section: Numerical Modellingmentioning

confidence: 99%

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

Prusty

Banerjee

2020

Materials

View full text Add to dashboard Cite

The behaviour of plain carbon as well as structural steels is qualitatively different at different regimes of strain rates and temperature when they are subjected to hot-working and impact-loading conditions. Ambient temperature and carbon content are the leading factors governing the deformation behaviour and substructural evolution of these steels. This review aims at investigating the mechanical behaviour of structural (or constructional) steels during their strain rate (ranging from very low to very high) as well as hot-working conditions and subsequently establishing the structure–property correlation. Rate-dependent constitutive equations play a significant role in predicting the material response, particularly where the experiments are difficult to perform. In this article, an extensive review is carried out on the merits and limitations of constitutive models which are commonly used to model the deformation behaviour of plain carbon steels.

show abstract

Section: Numerical Modellingmentioning

confidence: 99%

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

Prusty

Banerjee

2020

Materials

View full text Add to dashboard Cite

show abstract

“…The reason for the excessive errors is that the SiCp/7055Al composites not only has the strain rate hardening effect but also the softening effect, which is not taken into account in equation (18) [16,23,[35][36][37]. For some materials, the combined effect of thermal softening and strain hardening on the flow stress should be considered during dynamic deformation [22,23,38]. In view of the influence of thermal softening effect, it is reasonable to retain the thermal softening exponent in the temperature softening item.…”

Section: Modified Johnson-cook Modelmentioning

confidence: 99%

A modified Johnson-Cook model for dynamic behavior of spray-deposition 17 vol.% SiCp/7055Al composites at high strain rates

Tang

Wang

Jin

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

In this study, the dynamic impact tests of spray-deposited 17 vol% SiCp/7055Al composites at various strain rates were performed with a Split Hopkinson Pressure Bar (SHPB). In these tests, the strain rate was 392 s −1 -2002 s −1 , and the temperature was 293 K-623 K. Subsequently, the Johnson-Cook (JC) was used to describe the flow behaviors under high speed impact deformation, and its effectiveness was assessed. Results show that the stress values predicted by the JC model could be inconsistent with the experimental ones. A modified JC constitutive model of 17 vol% SiCp/7055Al composites was developed by modifying the strain rate hardening term and considering coupling effects of strain, temperature and strain rate. According to the comparison between the experimental data and the results assessed with the modified JC model, the proposed model could assess the stress-strain values more accurately, especially in the beginning of plastic deformation. This indicates that the composites exert the joint effects of strain rate hardening and temperature softening during high-speed impact deformation.

show abstract

“…The Johnson-Cook model [32,45] is very extended when strain rate and thermal softening or pressure are important factors to be considered in the fracture process, i.e., ballistic applications [46][47][48][49][50] and blast loadings [51][52][53][54]. This model defines a damage parameter D expressed by Equation 2, where ∆ε p is the equivalent plastic strain rate and ε R p the equivalent plastic strain to failure, which is dependent on the strain rate, temperature and pressure, as Equation 3shows.…”

Section: Johnson-cook Modelmentioning

confidence: 99%

Distinct Fracture Patterns in Construction Steels for Reinforced Concrete under Quasistatic Loading— A Review

Guerra

Gálvez

Cendón

et al. 2018

Metals

View full text Add to dashboard Cite

Steel is one of the most widely used materials in construction. Nucleation growth and coalescence theory is usually employed to explain the fracture process in ductile materials, such as many metals. The typical cup-cone fracture pattern has been extensively studied in the past, giving rise to numerical models able to reproduce this pattern. Nevertheless, some steels, such as the eutectoid steel used for manufacturing prestressing wires, does not show this specific shape but a flat surface with a dark region in the centre of the fracture area. Recent studies have deepened the knowledge on these distinct fracture patterns, shedding light on some aspects that help to understand how damage begins and propagates in each case. The numerical modelling of both fracture patterns have also been discussed and reproduced with different approaches. This work reviews the main recent advances in the knowledge on this subject, particularly focusing on the experimental work carried out by the authors.

show abstract

An enhanced Johnson–Cook strength model for splitting strain rate and temperature effects on lower yield stress and plastic flow

Cited by 65 publications

References 88 publications

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

Structure–Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation

A modified Johnson-Cook model for dynamic behavior of spray-deposition 17 vol.% SiCp/7055Al composites at high strain rates

Distinct Fracture Patterns in Construction Steels for Reinforced Concrete under Quasistatic Loading— A Review

Contact Info

Product

Resources

About