A novel calibration procedure of Johnson-Cook damage model parameters for simulation of scratch abrasion

Rajaraman, Dhanraj; Hertelé, Stijn; Fauconnier, Dieter

doi:10.1016/j.wear.2023.204977

Cited by 2 publications

(2 citation statements)

References 42 publications

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“…One of the most widely accepted criticisms of the Johnson-Cook model is that it oversimplifies material behavior by assuming isotropic hardening [39][40][41]. In addition, some studies have shown that the damage parameter in the Johnson-Cook model may not fully represent the complexity of material damage, especially in cases where multiple damage mechanisms occur [36,42]. Furthermore, model modifications to the constitutive equation for titanium alloys may introduce additional complexity, particularly for software implementation and calibration, without significantly improving the accuracy of the model predictions.…”

Section: Introductionmentioning

confidence: 99%

A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products

Tuninetti,

Sepúlveda,

Beecher

et al. 2024

Aerospace

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Finite element modeling for designing and optimizing lightweight titanium aerospace components requires advanced simulation tools with adequate material modeling. In this sense, a hybrid strategy is proposed in this work to identify the parameters of the Johnson–Cook plasticity and damage laws using a combined direct-inverse method. A direct calibration method for plasticity law is applied based on the literature-reported data of strain-stress curves from experimental tensile tests at different temperatures and strain rates. The triaxiliaty-dependent fracture parameters of the Johnson–Cook damage law at reference conditions of strain rate and temperature (d1, d2, and d3) are calibrated with the direct method based on new data of experimental evolution of computed average fracture strain with the average stress triaxiality. The validation is performed with numerical results from an accurate micromechanics-based Ti64 model. The inverse calibration method is used to determine the strain rate and temperature-dependent damage parameters (d4 and d5) through large strain simulations of uniaxial tensile tests. The numerical results, including average strain and necking profile at fracture, are then utilized to calculate stress triaxiality by the Bridgman criterion for adjusting parameters d4 and d5. The calibrated model yields a 2.1% error for plasticity and 3.4% for fracture predictions. The experimental and simulated load-bearing capacity using the micromechanics damage model differed by only 1%. This demonstrates that the SC11–TNT model of Ti64 is reliable for identifying the Johnson–Cook damage law through the accurate use of inverse methods. The hybrid calibration strategy demonstrates the potential capability of the identified Johnson–Cook model to accurately predict the design load-carrying capacity of Ti64 aerospace components under different deformation rates and temperatures while accounting for material damage effects.

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Section: Introductionmentioning

confidence: 99%

A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products

Tuninetti,

Sepúlveda,

Beecher

et al. 2024

Aerospace

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“…Finite element (FE) simulations and supplementary tailored tests of particular exposed structural elements are usually employed for this purpose. The accuracy of FE simulations of impact events is evidently influenced by the material models utilized [1][2][3][4][5][6][7][8][9][10][11]. Hence, deep understanding and thorough characterization of materials' mechanical properties through elaborate material models play pivotal roles in research into local dynamic events in structures.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Dynamic Mechanical Properties of Q460D Steel

Huang,

Lin,

et al. 2023

Metals

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The dynamic mechanical properties of Q460D steel were studied to facilitate an assessment of the impact resistance of building structures. In the present work, material performance tests of Q460D steel at different temperatures, strain rates, and stress states were conducted. Using a hybrid experimental–numerical approach, a modified Johnson–Cook (JC) constitutive relation, a modified Johnson–Cook (JC) fracture criterion, and a lode-dependent fracture criterion were calibrated. To validate the calibration, Taylor impact tests of Q460D steel rods onto rigid target plates were carried out in a one-stage light-gas gun system. Mushrooming, tensile splitting, and petalling failure modes were obtained as the impact velocity was increased from 191.6 to 422.1 m/s. A three-dimensional finite element model was built for the Taylor impact tests, and FE simulations were run using the material models calibrated. It was found that the FE simulations using the lode-dependent fracture criterion were reasonable in terms of the failure modes of the Taylor rods. In contrast, the fracture behavior of the Taylor rods was significantly underestimated using the lode-independent JC fracture criterion. Finally, the effect of anisotropy, strain rate sensitivity and yield plateau on the Taylor impact FE predictions were explored and discussed.

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A novel calibration procedure of Johnson-Cook damage model parameters for simulation of scratch abrasion

Cited by 2 publications

References 42 publications

A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products

A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products

A Study of the Dynamic Mechanical Properties of Q460D Steel

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