Results 251 to 260 of about 110,383 (323)

Ductile Fracture of L360QS Pipeline Steel Under Multi-Axial Stress States. [PDF]

Materials (Basel)
Zheng H, Jia B, Zhu L, Li N, Xiang Y, Lu J, Zhang S.   +6 more
europepmc   +1 more source

Study on the anti-penetration randomness of metal protective structures based on optimized artificial neural network. [PDF]

Sci Rep
Liu L, Chen W, Lu S, Yu Y, Sun M.
europepmc   +1 more source

On the calibration strategies of the Johnson–Cook strength model: Discussion and applications to experimental data

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2014
Abstract The present paper aims at assessing the various procedures adoptable for calibrating the parameters of the so-called Johnson–Cook strength model, expressing the deviatoric behavior of elastoplastic materials, with particular reference to the description of High Strain Rate (HSR) phenomena.
Luca Gambirasio, Egidio Rizzi
exaly   +4 more sources

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A review on Johnson Cook material model

Materials Today: Proceedings, 2022
Krishna Mohan Buddaraju
exaly   +2 more sources

Constitutive modelling of Al7075 using the Johnson–Cook model

Bulletin of Materials Science, 2019
In this paper, hot compression behaviour of Al7075 in the temperature range of 573–723 K and the strain rate range of 0.001–0.1 $$\hbox {s}^{-1}$$ , based on standard requirements, was studied.
Sajad Rasaee, A H Mirzaei, D Almasi
openaire   +2 more sources

A comparative study on Johnson-Cook and modified Johnson-Cook constitutive material model to predict the dynamic behavior laser additive manufacturing FeCr alloy

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, Jie Sun, Jianfeng Li, Yuqin Yan, Ping Wang   +4 more
exaly   +2 more sources

An Enhanced Johnson–Cook Model for Hot Compressed A356 Aluminum Alloy

Advanced Engineering Materials, 2020
The isothermal compression experiments with the strain rates of 0.01–10 s−1 and deformation temperature range of 300–420 °C are performed to investigate the hot deformation behavior of A356 aluminum alloy. Also, the complex deformation mechanisms are analyzed. It is found that, as the strain is gradually increased, the flow stress first rises, and then
Xiao-Min Chen, Y. C. Lin, Hong-Wei Hu, Shun-Cun Luo, Xiao-Jie Zhou, Yi Huang   +5 more
openaire   +2 more sources

Comparison of Johnson-Cook Model and an ISV Plasticity Damage Model in Penetration Simulation

Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis, 2016
This paper compares Johnson-Cook model and an internal state variable (ISV) damage model developed by Bammann and Horstemeyer in simulating damage behavior of materials during penetration process. Bammann and Horstemeyer’s ISV damage model employs internal state variables and their rate equations to capture the evolution of internal states of materials
Yangqing Dou, Yucheng Liu, Youssef Hammi
openaire   +2 more sources

Constitutive Modeling of 2024 Aluminum Alloy Based on the Johnson–Cook Model

Transactions of the Indian Institute of Metals, 2019
In this paper, hot compression behavior of Al2024 in the temperatures range of 573–723 K and strain rate range of 0.001–0.6 s−1 was studied based on standard tests. The prediction of flow stress was performed using constitutive equations based on the basic and modified Johnson–Cook model, and the accuracy of the proposed models was estimated by ...
S. Rasaee, A. H. Mirzaei
openaire   +2 more sources

Johnson-Cook model parameters determination for 11% and 14% Mn-Steel

Materials Science and Engineering: B, 2022
The behaviour of high-manganese steel under large strains and different strain rates needs to be investigated to predict its response to various dynamic loading conditions including impact. An empirical constitutive relation developed by Johnson and Cook (JC) is applied at high strain rate and dynamic loading conditions to determine the flow stress and
Shahanur Hasan, Md, De Pellegrin, Dennis, Clegg, Richard, Yan, Cheng   +3 more
openaire   +3 more sources