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Incorporation of Material Variability in the Johnson Cook Model
Procedia Engineering, 2015 AbstractThe Johnson Cook (JC) material model is often used for modeling hypervelocity impacts (HVI) because it is capable of capturing high rate deformation and temperature effects. Within the JC model, material damage leading to fracture is aggregated using a path dependent damage parameter. Contributions to the damage parameter are calculated at each
Kupchella, Ryan +4 more
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Numerical Modeling and Multi Objective Optimization of Face Milling of AISI 304 Steel [PDF]
Journal of Applied and Computational Mechanics, 2019 There is a requirement to find accurate parameters to accomplish precise dimensional accuracy, excellent surface integrity and maximum MRR. This work studies the influence of various cutting parameters on output parameters like Cutting force, Surface ...
K. Krishnaprasad, C.S. Sumesh, A. Ramesh
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Materials & Design, 2020 Constitutive models were built based on the results of isothermal hot compression tests for a 6061 aluminium alloy at temperatures of 400, 450, 500, and 550 °C and strain rates of 0.1, 1, and 10 s−1, which reproduced conditions of the hot rolling forming
André Rudnytskyj +3 more
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AIP Conference Proceedings, 2019 Titanium alloys such as Ti6Al4V are widely used and are well known as hard-to-machine material. The material behavior that is described by the constitutive equation plays a pivotal role in modeling and simulation of machining process. The Johnson–Cook material model is widely used for analysis of material flow stress, especially for those materials ...
Kugalur Palanisamy, Nithyaraaj +3 more
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Applied Mechanics, 2021 Understanding the effect of thermomechanical loads during finish cutting processes, in our case hard milling, on the surface integrity of the workpiece is crucial for the creation of defined quality characteristics of high-performance components ...
Andrey Vovk +4 more
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A Modified Johnson Cook Constitutive Model for Aermet 100 at Elevated Temperatures
High Temperature Materials and Processes, 2018 The predicted flow behaviors of Aermet 100 steel were analyzed within a wide range of temperatures of 1,073 K–1,473 K and strain rates of 0.01 s–1–50 s–1 based on isothermal compression tests.
Zhanwei Yuan, Fuguo Li, Guoliang Ji
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High Strain-Rate Material Model Validation for Laser Peening Simulation
The Journal of Engineering, 2015 Finite element modeling can be a powerful tool for predicting residual stresses induced by laser peening; however the sign and magnitude of the stress predictions depend strongly on how the material model captures the high strain rate response.
Kristina Langer +5 more
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Hot Deformation Behavior and Microstructure Evolution of 2219/TiB2 Al-matrix Composite [PDF]
Materials Research, 2020 Hot compression tests for 2219/TiB2 Al-matrix composite were conducted on a Gleeble-3500 isothermal simulator in the temperature range of 300~500°C and strain rates of 0.01, 0.1, 1, 10s-1 to obtain true stress strain curves.
Wang Jing, Liang Qiang, Li Ping
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Jixie qiangdu, 2022 In order to study the dynamic mechanical properties of SUS304 stainless steel commonly used in rail vehicles, tensile tests under wide strain rates of 0.000 2 s-1～500 s-1 were carried out respectively.
LIU YuXin +5 more
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Numerical Study of Deep Drawability Using Johnson-Cook Model
, 2022 In the Deep-drawing process, a blank is drawn into a hollow element taking the shape of a die by the operation of a punch. This process has numerous advantages and applications in the automobile, aerospace, kitchenware, and packaging industries. The primary purpose of this study is to design and simulate the deep drawing process in LS-Dyna PrePost(R ...
Bansal, Srijan +2 more
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