Research on parameter identification of Johnson–Cook constitutive model for TC17 titanium alloy cutting simulation

Shen, Xuehong; Zhang, Dinghua; Yao, Changfeng; Tan, Liang; Li, Xiangyu

doi:10.1016/j.mtcomm.2022.103772

Cited by 23 publications

(13 citation statements)

References 45 publications

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“…TC17, a (α+β)-type two-phase titanium alloy with a nominal composition of Ti-5Al-2Sn-2Zr-4Mo-4Cr, stands out as a 'triple-high titanium alloy' due to its exceptional qualities-high strength, toughness, and hardenability. This unique combination aligns seamlessly with design requirements for damage tolerance, structural efficiency, reliability, and cost-effectiveness [4,5]. TC17 is primarily available in bar and forging forms, offering versatility in adjusting its mechanical properties through HT treatment.…”

Section: Introductionmentioning

confidence: 80%

Effects of different treatment processes on microstructure and tensile fracture behaviour of selected laser melting TC17 titanium alloy

Jiang,

Dong,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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It is essential to study the tensile fracture mechanism of additively manufactured materials and develop the effective process treatment techniques to improve their fracture resistance. In this paper, the effects of different treatment processes on the microstructure and tensile fracture properties of TC17 titanium alloy melted by laser selective zone melting were investigated. The static tensile fracture morphological characteristics were observed by combining SEM and EDS. The metallographic microstructure after chemical corrosion was observed optically. And the tensile fracture morphology of the three states of TC17 titanium alloy samples at room temperature conditions was investigated. The results show that the metallographic matrix microstructure of TC17 titanium alloy after HT, HIP and HIP-HT treatments was a bimodal structure with α+β phases, i.e., β phase was in the form of a net basket, and α phase was in the form of a coarse bar. The grain sizes of the samples treated by different processes were different, but the difference in grain size of the HT-treated tissues was small, and the difference in grain size of the HIP-HT-treated tissues was large. And the coarse α-phase segregation could be seen at the edge of the samples. The 3D-printed materials had complex changes in anisotropic properties affected by the printing structure and tissue. The printed tissues were brittle and had high internal stresses. These problems were partly improved at high temperatures, but they still existed. The HIP-HT-treated materials had a large α+β-phase bimodal structure. The HT-treated material had coarse grains and precipitation phases, poor room temperature plasticity, and improved high temperature plasticity. After HT treatment, the original printing microstructure changed, the strength and plasticity were significantly improved, but the macroscopic printing structure still had a slight influence on the fracture morphology. When HIP treatment temperature was higher, the influence of macroscopic printing structure basically disappeared, but the grain and microstructure grew up, and the strength and plasticity were slightly lower than that of the HT treatment. HIP process basically eliminated the unfused defects of the three-dimensional morphology, and the local weak bonding zone formed.

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Section: Introductionmentioning

confidence: 80%

Effects of different treatment processes on microstructure and tensile fracture behaviour of selected laser melting TC17 titanium alloy

Jiang,

Dong,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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“…As the softening effect increases with temperature, m is greater than 1; as the softening effect decreases with temperature, m is less than 1. [14] In this paper, the temperature rise coefficient of copper, tungsten, and tungsten alloy are combined, and m is taken as 1.…”

Section: 2fitting and Temperature Rise Coefficient Of Dynamic Paramet...mentioning

confidence: 99%

Study on dynamic mechanical properties of tungsten copper alloy and application of shaped charge

Huang

2023

J. Phys.: Conf. Ser.

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The tungsten-copper alloy liner has better performance than the copper liner. In order to better study the jet forming and penetration characteristics and dynamic mechanical properties of tungsten-copper alloy-shaped charge liner, this paper uses a multi-functional mechanical experimental machine and a Hopkinson bar device to carry out quasi-static tensile and dynamic impact tests, respectively, and fit the Johnson-Cook constitutive equation. The obtained parameters are used to carry out numerical simulations and compared with the experiment. The results show that the stress of the dynamic impact curve is higher than that of the quasi-static stress, and the strain rate strengthening effect is more obvious. There is an adiabatic temperature rise at the strain rate and an obvious thermal softening effect at different strain rates. At the highest strain rate, it shows an obvious strain rate strengthening effect and obvious plasticizing effect, and the tungsten-copper alloy has a certain sensitivity to strain rate. The precision of the Johnson-Cook constitutive model is higher, and it can better describe the plastic flow stress of tungsten-copper alloy at a high strain rate. When the parameters of the fitted Johnson-Cook model are used in the numerical simulation, the error between the numerical simulation and the actual is small. The obtained Johnson-Cook model and dynamic mechanical properties can help the follow-up study on the influencing factors of tungsten-copper jet forming and fracture, including the effect of material strength on injection instability, the integration of the shear band model with hydrodynamics, and the comparison of injection molding penetration with copper liners provide relevant data.

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“…The bullet penetration of the target plate takes place at high strain rates and temperatures, so the effects of strain rate and temperature on material properties need to be considered. The Johnson-Cook [12,13] model provided by LS-DYNA (R11.0.0, Livermore Software Technology Corporation, Livermore, CA, USA) reflects the change in material properties at high strain rates and temperatures and predicts the target plate's yielding and fracture behavior. The yield function is mathematically described as follows [14,15]:…”

Section: Materials Constitutive Modelmentioning

confidence: 99%

“…Zhu et al [11] analyzed the velocity characteristics and penetration process of the steel target plates penetrated by DU and tungsten alloy fragments by using finite element software ANSYS/LS-DYNA and the Lagrange algorithm. However, depleted uranium alloys are highly radioactive and have poor storage properties [12], and comparative studies of their intrusion properties with commonly used core materials, tungsten alloys, and high-strength steels have been less reported.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Penetration Process of Depleted Uranium Alloy Based on an FEM-SPH Coupling Algorithm

Zhang

Yan

et al. 2022

Metals

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In order to quantitatively study the penetration capability of depleted uranium alloy, a simulation model of bullet impact on target plate with FEM-SPH coupling algorithm was established by using LS-DYNA software, which was combined with Johnson-Cook intrinsic model, Johnson-Cook fracture criterion, and equation of state to conduct a simulation study of alloy bullets made of depleted uranium alloy, tungsten alloy, and high-strength steel to penetrate target plate at 1400 m/s initial velocity. The results show that under the same conditions of initial kinetic energy, initial velocity, and initial volume, the residual kinetic energy of the depleted uranium alloy bullet is 1.14 times that of tungsten alloy and 1.20 times that of high-strength steel, and the residual velocity is 1.14 times that of tungsten alloy and 1.18 times that of steel, and the residual volume is 1.13 times that of tungsten alloy and 1.23 times that of steel after the penetration is completed. The shape of the bullet after penetrating the target plate is relatively sharp, and the diameter of the target hole formed is about 1.70 times the diameter of the projectile, which is significantly larger than 1.54 times that of tungsten alloy and 1.39 times that of high-strength steel, indicating the excellent penetration performance of depleted uranium alloy.

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Research on parameter identification of Johnson–Cook constitutive model for TC17 titanium alloy cutting simulation

Cited by 23 publications

References 45 publications

Effects of different treatment processes on microstructure and tensile fracture behaviour of selected laser melting TC17 titanium alloy

Effects of different treatment processes on microstructure and tensile fracture behaviour of selected laser melting TC17 titanium alloy

Study on dynamic mechanical properties of tungsten copper alloy and application of shaped charge

Numerical Simulation of Penetration Process of Depleted Uranium Alloy Based on an FEM-SPH Coupling Algorithm

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