Results 11 to 20 of about 17,460 (261)
The Johnson-Cook Constitutive Model of TA19 Titanium Alloy
Journal of Physics: Conference Series, 2023 Abstract In order to obtain the stress-strain relationship of the TA19 titanium at 10−3 s−1 to 4100 s−1 strain rates, a quasi-static tests and a Split Hopkinson Bar were performed at room temperature. The Johnson-Cook model analyzed and the parameters in the constitutive equation are fitted according to the experimental data.
Wenting Tang, Changli Liu, Kaiming Zhang
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Crystals, 2023 To study the deformation and fracture mechanism of 6061 aluminum alloy extruded pipe after secondary heat treatment under different stress triaxiality, a Johnson–Cook failure model was developed.
Tengjiao Hong +5 more
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Dynamic constitutive relationship of CuCrZr alloy based on Johnson-Cook model
Nuclear Materials and Energy, 2020 CuCrZr alloy has been acknowledged as one of the most promising candidate materials for the heat sink of plasma facing components in nuclear fusion devices with its excellent thermal conductivity and specific mechanical strength.
Xinyuan Qian +8 more
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Metals, 2023 The Johnson–Cook model is widely used because of its ability to meet the simulation material requirements in various situations. However, under different working conditions, the accuracy of the model may have errors. In this work, based on Abaqus (Abaqus
Danqing Yin +5 more
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Implementation of Johnson–Cook model in EFES program software [PDF]
AIP Conference Proceedings, 2018 The article presents the results of approbation of a numerical method for calculating metallic materials under dynamic loading. The mathematical model of the materials behavior, proposed by G. Johnson and W. Cook, was used. This model takes into account the accumulation of damage in the material and describes well the metals fracture under high ...
A. V. Radchenko +3 more
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Crystals, 2023 This study presents an exploration of the flow stress constitutive model and the deformation mechanism of Nb521, both critical for its practical application.
Baohui Zhu +3 more
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Journal of Materials Research and Technology, 2021 A plastic temperature-dependent constitutive model is developed for 0.05 mm thickness pure aluminum diaphragms at large strains by using bulge test method. Rupture strain of the material is recorded below two percent according to tensile tests.
M.M. Ashrafian, S.A. Hosseini Kordkheili
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Journal of Materials Research and Technology, 2019 In order to understand the constitutive behavior of as-cast AZ80 with large grain size, the uniaxial hot compression tests were carried out over a series of isothermal upsetting experiments. The maximum deformation degree was 65%.
Xingrui Chen +7 more
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OPTIMIZATION OF JOHNSON-COOK CONSTITUTIVE MODEL PARAMETERS
Journal of Machine Engineering, 2019 In modern machining industry, the concept of process optimization has gained widespread recognition. FEM simulations are commonly used for the optimization of machining operations, allowing for a proper choice of tool geometry and process parameters to obtain results that are in accordance with end user criteria.
Piotr LÖSCHNER +2 more
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INVERSE COMPUTATIONAL DETERMINATION OF JOHNSON-COOK PARAMETERS USING THE SHPB TEST APPARATUS
Acta Polytechnica CTU Proceedings, 2019 The paper describes determination of the material parameters of the Johnson-Cook constitutive model of steel S235 JR sample material by applying the inverse computational methodology using the digital twin model of the SHPB.
Anja Mauko, Branko Nečemer, Zoran Ren
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