On the importance of the choice of the parameters of the Johnson-Cook constitutive model and their influence on the results of a Ti6Al4V orthogonal cutting model

Ducobu, François; Rivière-Lorphèvre, Édouard; Filippi, Enrico

doi:10.1016/j.ijmecsci.2017.01.004

Cited by 125 publications

(43 citation statements)

References 30 publications

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“…The availability of J-C constants for metal materials commonly used in machining is increasing; however, it is still a major limitation. For materials such as AISI 316L steel and the Ti6Al4V titanium alloy, the J-C constants must be chosen from a large number of J-C constants available for the same material [45,46]. The error bars of documented temperatures in machining AISI 1045 steel were found to be generally larger than the error bars of documented temperatures in machining Al 6082-T6 aluminum because of the large input force errors in predicting temperatures for AISI 1045 steel.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Temperature Distribution in Orthogonal Machining Based on the Mechanics of the Cutting Process Using a Constitutive Model

Ning

Liang

2018

JMMP

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This paper presents an original method of predicting temperature distribution in orthogonal machining based on a constitutive model of various materials and the mechanics of their cutting process. Currently, temperature distribution is commonly investigated using arduous experiments, computationally inefficient numerical analyses, and complex analytical models. In the method proposed herein, the average temperatures at the primary shear zone (PSZ) and the secondary shear zone (SSZ) were determined for various materials, based on a constitutive model and a chip-formation model using measurements of cutting force and chip thickness. The temperatures were determined when differences between predicted shear stresses using the Johnson-Cook constitutive model (J-C model) and those using a chip-formation model were minimal. J-C model constants from split Hopkinson pressure bar (SHPB) tests were adopted from the literature. Cutting conditions, experimental cutting force, and chip thickness were used to predict the shear stresses. The temperature predictions were compared to documented results in the literature for AISI 1045 steel and Al 6082-T6 aluminum in multiple tests in an effort to validate this methodology. Good agreement was observed for the tests with each material. Thanks to the reliable and easily measurable cutting forces and chip thicknesses, and the simple forms of the employed models, the presented methodology has less experimental complexity, less mathematical complexity, and high computational efficiency.

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Section: Resultsmentioning

confidence: 99%

Prediction of Temperature Distribution in Orthogonal Machining Based on the Mechanics of the Cutting Process Using a Constitutive Model

Ning

Liang

2018

JMMP

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“…The high-speed impact experiments of magnesium alloys have been widely studied [16][17][18][19][20]. It is important to ensure that the accuracy to predict the mechanism performance of materials, which is tightly related to the effectiveness of constitutive material model in representing the actual alloy components under the high strain rate loading [21][22][23]. There are many of constitutive material models have been reported in literatures [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy

Wang

Yuan

Jin

et al. 2020

Mater. Res. Express

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An accurate prediction of high speed impact behavior of metals by considering the combined effects of strain, strain rate and temperature is essential for understanding dynamic impact deformation of metals. To understand the effect of strain, strain rate and temperature on the high-speed impact behavior of Mg-1Al-4Y alloy, the dynamic impact compression experiments for Mg-1Al-4Y alloy were carried out by split Hopkinson pressure bar (SHPB). The mechanical properties of Mg-1Al-4Y alloy specimens were studied at different strain rate and temperature. The number of {10-12} extension twins decreases with the strain rate increasing from the electron backscatter diffraction (EBSD) technology, because of the formation of extension twins is suppressed with the strain rate increases, and dislocations become the main mode of dominant deformation. It is also found that the increase of strain rate has a positive effect on the strength of the material. But, the temperatures have a negative impact on the strength of the material. A modified Johnson-cook model has been presented, which shows good predictions with experimental results at different strain rates and temperatures. Especially, the predictions of the Johnson-cook equation are completely consistent with experimental results in small deformation stage.

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“…With this regard, Karkalos et al optimized the J-C model parameters for AISI 316L stainless steel using high strain rate range and temperature ranges [19]. Tan [22]. By considering the literature, it is obviously seen that there is no study on simulation of plastic deformation processes based on finite element method for Nimonic 80A superalloy although the material is important in aerospace areas requiring high temperature characteristics.…”

Section: Introductionmentioning

confidence: 99%

Confirmation of Johnson-Cook Model Parameters for Nimonic 80A alloy by Finite Element Method

Korkmaz¹,

Günay²

2020

Politeknik Dergisi

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Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Korkmaz, M.E and Günay, M., "Confirmation of johnson-cook model parameters for nimonic 80A alloy by finite element method", Politeknik Dergisi, 23(3): 625-632, (2020).Erişim linki (To link to this article): http://dergipark.org.tr/politeknik/archive Highlights  The determination of material constitutive model (Johnson-Cook) of Nimonic 80A superalloy.  Three different types of compression tests (quasi-static, dynamic and high temperatures) in order to determine the equation parameters.  The confirmation of Johnson-Cook parameters of Nimonic 80A superalloy.  A suggestion of finite element simulation of any plastic deformation processes such as forging, rolling and deep drawing by using JC parameters of Nimonic 80A material as a next study. Graphical AbstractThe aim of the study is to confirm the predetermined J-C model parameters for Nimonic 80A superalloys using finite element method. Figure. Experimental procedure AimThe aim of the study is to confirm the predetermined J-C model parameters for Nimonic 80A superalloys using finite element method. Design & MethodologyJC parameters of Nimonic 80A nickel-based superalloys were identified via quasi-static tests, dynamic tests and different temperature tests. OriginalityBy considering the literature, it is obviously seen that there is no study on simulation of plastic deformation processes based on finite element method for Nimonic 80A superalloy. FindingsThe mean deviation between experimental results and simulation results obtained with FEM were calculated as average of %3.23. ConclusionConsequently, the Johnson-Cook model parameters of Nimonic 80A was confirmed based on overall results. Hence, it was concluded that JC model parameters of the material can be confidently used for any plastic deformation processes. ABSTRACTNimonic 80A superalloy is frequently used due to its high creep resistance, oxidation resistance and high resistance to high temperature corrosion. On the other hand, due to compatibility of simulation of plastic deformation processes, Johnson-Cook model is chosen among the materials models such as Zerille Armstrong, Bordner Partom, Steinberg-Guinan etc. In this study, primarily, quasi-static compression tests were performed for 10-3, 10-2 and 10-1 s-1 strain rates at room temperature. Secondly, dynamic compression tests were secondly conducted at high strain rates ranging from 370 to 954 s-1 using the Split Hopkinson Pressure Bar (SHPB) apparatus. Then, the compression tests were conducted at a temperature level from 24~200 °C at the reference strain rate. Johnson-Cook model parameters of Nimonic 80A were determined by analyzing the data obtained from the tests. Lastly, the compression simulations with finite element method (FEM) were performed in ANSYS Workbench to confirm the accuracy of the parameters. In the light of the results, it was determined that there is an average of %3.23 deviation between the experimental and the simulation values. The result showed that acc...

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On the importance of the choice of the parameters of the Johnson-Cook constitutive model and their influence on the results of a Ti6Al4V orthogonal cutting model

Cited by 125 publications

References 30 publications

Prediction of Temperature Distribution in Orthogonal Machining Based on the Mechanics of the Cutting Process Using a Constitutive Model

Prediction of Temperature Distribution in Orthogonal Machining Based on the Mechanics of the Cutting Process Using a Constitutive Model

Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy

Confirmation of Johnson-Cook Model Parameters for Nimonic 80A alloy by Finite Element Method

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