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A modified Johnson-Cook model considering strain softening of A356 alloy
Materials Science and Engineering: A, 2020Abstract The compression experiments of as-received A356 alloy were conducted at temperatures ranges from 300 to 500 °C with varying strain rates. The influence of deformation parameters on the strain softening of flow stress were researched. The observation of microstructure indicated that high temperature and large strain were favorable for dynamic
Liqun Niu +4 more
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Journal of Alloys and Compounds, 2017
Abstract An accurate prediction of flow behavior of metals considering the combined effects of strain, strain rate and temperature is essential for understanding flow response of metals, and a key requirement for numerical modeling and simulation of machining. Thus, the effects of high strain rate and elevated temperature on the deformation behaviors
Yanhua Zhao +4 more
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Abstract An accurate prediction of flow behavior of metals considering the combined effects of strain, strain rate and temperature is essential for understanding flow response of metals, and a key requirement for numerical modeling and simulation of machining. Thus, the effects of high strain rate and elevated temperature on the deformation behaviors
Yanhua Zhao +4 more
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The modified temperature term on Johnson Cook model for AZ31 magnesium alloy
Materialwissenschaft und Werkstofftechnik, 2018AbstractThe quasi‐state and dynamic mechanism of AZ31 magnesium alloy at a strain rates range of 0.001 s‐1–2500 s‐1 under a temperature range of 20 °C–250 °C were researched by compression tests using the electronic universal testing machine and split Hopkinson pressure bar system.
F. Zhang +4 more
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A modified Johnson–Cook model of dynamic tensile behaviors for 7075-T6 aluminum alloy
Journal of Alloys and Compounds, 2015Abstract The dynamic mechanical behaviors of 7075-T6 aluminum alloy at various strain rates were measured by dynamic tensile tests using the electronic universal testing machine, high velocity testing system and split Hopkinson tensile bar (SHTB). Stress–strain curves at different rates were obtained.
Ding-Ni Zhang +3 more
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A modified Johnson–Cook model for 7N01 aluminum alloy under dynamic condition
Journal of Central South University, 2017Tensile tests at different strain rates (0.0002, 0.002, 0.02, 1000 and 3000 s–1) were carried out for 7N01 aluminum alloy. Low strain rate experiments (0.0002, 0.002 and 0.02 s–1) were conducted using an electronic mechanical universal testing machine, while high strain rate experiments (1000, 3000 s-1) were carried out through a split Hopkinson ...
Yi-ben Zhang +3 more
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Modified Johnson-Cook model of aluminum alloy 6016-T6 sheets at low dynamic strain rates
Materials Science and Engineering: A, 2021Abstract The use of a dynamical constitutive model is essential for the numerical analysis of dynamic impact. In this study, uniaxial tension tests were conducted on aluminum alloy (AA) 6016-T6 sheets under different strain rates (0.001–100/s). The results show that the flow properties of AA 6016-T6 is slightly sensitive to strain rate.
Zhe Jia +4 more
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Journal of Constructional Steel Research, 2021
Abstract In this study, the parameters of the Johnson-Cook model of SWRH82B steel are determined to describe the dynamic mechanical properties and fracture behaviors of steel wires. A total of 299 specimens are tested to determine the parameters. Quasi-static tensile tests at varying temperatures (20–700 °C) and different strain rates (10−4–10 −2 s ...
Xinyue Liu, Huihuan Ma, Feng Fan
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Abstract In this study, the parameters of the Johnson-Cook model of SWRH82B steel are determined to describe the dynamic mechanical properties and fracture behaviors of steel wires. A total of 299 specimens are tested to determine the parameters. Quasi-static tensile tests at varying temperatures (20–700 °C) and different strain rates (10−4–10 −2 s ...
Xinyue Liu, Huihuan Ma, Feng Fan
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A Modified Johnson-Cook Model Incorporating the Effect of Grain Size on Flow Stress
AISTech2020 Proceedings of the Iron and Steel Technology Conference, 2020 The mechanical properties of steel are influenced by grain size, which can change through mechanisms such as nucleation and growth at elevated temperatures.
K. Chandrashekhara +4 more
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Modified Johnson–Cook Model of AA5005 Alloy for Thermal Tensile Tests
Mechanisms and Machine Science, 2023Sijia Li +4 more
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Procedia CIRP, 2022 A new modified Johnson-Cook model is developed to capture the non-linear thermal softening behaviour below the austenite transformation temperature (723°C) in C45 ferritic-pearlitic steel, which is not captured by the original Johnson-Cook (JC) model ...
H Ghadbeigi, Sabino Ayvar-Soberanis
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