The modified Johnson-Cook strain-stress constitutive model according to the deformation behaviors of a Ni-W-Co-C alloy

Xie, Guoliang; Yu, Xiaotong; Gao, Zhenfeng; Xue, Wenli; Zheng, Liang

doi:10.1016/j.jmrt.2022.07.053

Cited by 16 publications

(2 citation statements)

References 31 publications

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“…The Johnson cook model is among the themoviscoplastique phenomenological models, which represents sensitivity to strain rate and temperature. The popularity of this model makes it available in many computer codes and therefore more advantageous when modeling [14,15]. The Johnson-Cook model uses a multiplicative form, represented by Eq.…”

Section: Thermo-viscoplastic Models Of Johnson-cook and Of Damagementioning

confidence: 99%

Optimization of the cutting tool geometry when milling aluminum honeycomb structures

Zarrouk

Salhi²,

Nouari³

et al. 2022

Preprint

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The manufacture of aluminum honeycomb structures is a major concern for companies in the aerospace industry, due to its high out-of-plane strength and stiffness-to-weight ratio. However, the shaping of this type of structure represents a technical challenge for engineers and researchers in terms of premature wear of the cutting tool and the quality of the machined surface. The analysis of the parameters influencing the machinability of this type of structure is often based on empirical tests. However, the experimental procedure fails to visualize the mechanism of cut formation due to the high rotational speed of the cutting tool. Consequently, it is then necessary to use reliable numerical models to access instantaneous and much localized physical quantities. To this end, we have developed a 3D finite element model associated with real working conditions using the Abaqus/Explicit analysis software. Based on this model, an experimental validation was carried out by analyzing the appropriate behavior laws. Furthermore, the influence of the geometry of the cutting tool in terms of the number of teeth on the size of the chips, the cutting forces and the quality of the generated surface was analyzed. The results obtained show that the integrity of the cutting tool can be optimized and the quality of the machined surface can be improved.

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Section: Thermo-viscoplastic Models Of Johnson-cook and Of Damagementioning

confidence: 99%

Optimization of the cutting tool geometry when milling aluminum honeycomb structures

Zarrouk

Salhi²,

Nouari³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Previous research on the dynamic impact response of metals has predominantly centered on the use of alloy materials. Through a combination of experiments and numerical simulations, researchers have determined parameters for the J-C model, while also evaluating the validity of the J-C constitutive relationship and failure criteria [22][23][24][25][26][27][28]. However, marine pipelines are primarily made of carbon steel.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Mechanical Properties and Damage Parameters of Marine Pipelines Based on Johnson–Cook Model

Tian,

Pei,

Rong

2023

JMSE

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A comprehensive understanding of the dynamic behavior of materials and structures under impact loads is paramount for the design and maintenance of reliable marine pipelines and associated structures. However, there is a lack of comprehensive research on the full characterization of constitutive and failure models of carbon steels, which are commonly used in marine pipelines. In this paper, Q235 steel was subjected to quasi-static tensile tests at room temperature on smooth specimens to obtain the constitutive parameters using the Johnson–Cook (J-C) model. Subsequently, quasi-static tensile tests were conducted on notched specimens, and dynamic tensile tests were performed on smooth round bars to obtain stress triaxiality and failure strain. The acquired data were then utilized to fit the failure parameters using the Johnson–Cook (J-C) damage model, a widely accepted constitutive model employed in high-strain rate applications through the least squares method. Finally, the tensile test is numerically simulated based on the acquired experimental parameters. The obtained results reveal a remarkable agreement between the curve fitted by the J-C constitutive model and the experimental tensile curve. Additionally, a high degree of correlation between the load-displacement curves of the tests and simulations provides robust validation of the accuracy of the dynamic mechanical parameters for Q235 steel. These findings contribute valuable insights into the behavior of carbon steels commonly used in marine pipelines, enhancing the overall understanding of their response to impact loads and informing more reliable design and maintenance practices.

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An Improved Physically-Based Constitutive Model for the Hot Deformation Behavior of GH4698 Superalloy by Considering Dynamic Softening Mechanism

Yan,

Wen,

Huang

et al. 2023

Lecture Notes in Mechanical Engineering

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The modified Johnson-Cook strain-stress constitutive model according to the deformation behaviors of a Ni-W-Co-C alloy

Cited by 16 publications

References 31 publications

Optimization of the cutting tool geometry when milling aluminum honeycomb structures

Optimization of the cutting tool geometry when milling aluminum honeycomb structures

Dynamic Mechanical Properties and Damage Parameters of Marine Pipelines Based on Johnson–Cook Model

An Improved Physically-Based Constitutive Model for the Hot Deformation Behavior of GH4698 Superalloy by Considering Dynamic Softening Mechanism

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