Determination of Johnson–Cook Plasticity Model Parameters for Inconel718

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Duration: 22m
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level:Intermediate

Determination of Johnson–Cook Plasticity Model Parameters for Inconel718

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Simulation Files

  • Tutorial Video
    00:00
  • Modeling Files

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Who this product is for :

  • Civil Engineers
  • Mechanical Engineers
  • Engineering students

File collection

Simulation Files

  • Tutorial Video
    00:00
  • Modeling Files

Student Ratings & Reviews

No Review Yet
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Description

Papers abstract:

In order to simulate foreign object damage (FOD) phenomenon in aircraft high-pressure compressor blades made of a nickel-based super-alloy, Johnson–Cook (J–C) plasticity model was used. For prediction of material’s plastic behavior at temperature of 400 °C (working temperature of the blades) in the range of strain rates associated with the FOD phenomenon (in order of 106 s21), material parameters of A, B, C, n and m for the J–C plasticity model had to be determined experimentally. Parameters of A, B and n with values of 1108, 699 MPa and 0.5189, respectively, were obtained from quasi-static tensile tests. Moreover, m was determined to be 1.2861, also through quasi-static tensile tests with a strain rate of 1 s21 at three temperatures of 475, 550 and 625 °C. However, in order to determine C, firstly a steel ball was impacted on the surface of a flat specimen made of a precipitation-hardening alloy, and then, the impact site was 3D scanned to obtain the induced crater profile. Finally, the impact test (ballistic) was simulated using Abaqus, and a C value of 0.0085 was determined by comparing the actual crater profile with the one obtained from the simulation through a trial-and-error approach.

Product Overview:
This tutorial provides a step-by-step Abaqus simulation of cold spray deposition, where steel particles impact an Inconel718 target, replicating high-velocity impact conditions. Key simulation steps include:

  • Geometry setup: Particle (40 µm) and target (250 µm × 120 µm) with revolved symmetry.
  • Material assignment: J–C model for Inconel718 (A=1108 MPa, B=699 MPa, C=0.0085) and steel from Abaqus library.
  • Dynamic explicit analysis: 60 ns duration with ALE adaptive meshing.
  • Boundary conditions: Fixed target, particle velocity (−700 m/s), and thermal settings (298 K).
  • Post-processing: Stress, plastic strain, and temperature validation.

 

In this tutorial, particle-substrate interactions are simulated, according to data from the work of Farahani et al.

More information

  • This product bridges theoretical J–C parameters with practical Abaqus implementation, offering a reproducible framework for high-velocity impact studies. The tutorial simplifies real-world scales (e.g., particle size) for computational efficiency while maintaining physical accuracy. Users can adapt the model for other materials (e.g., copper, ceramics) by updating material properties. The included video clarifies critical steps like ALE remeshing and temperature validation.

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Material Includes

  • Package Includes the following items:
  • Simulation files:
  • Abaqus files (The INP files are applicable to all versions):
  • CAE
  • INP
  • JNL
  • Instructional video:
  • Concise 22-minute guide to model setup and outputs for cold spray deposition

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