VUMAT for the JHB and JH-2 ceramic model in ABAQUS

The purpose of this package(VUMAT for the JHB and JH-2 ceramic model) is to teach you, how to use Johnson-Holmquist (JH-2) and Johnson, Holmquist, and Beissel (JHB) built-in material models to simulate the failure behavior of brittle materials.

With the release of Abaqus/Explicit 6.10, two constitutive models for ceramics and other brittle materials are included as built-in VUMATs:

• Johnson, Holmquist, and Beissel (JHB)
• Johnson and Holmquist (JH-2)

The model is intended for the simulation of the mechanical response and failure behavior of brittle materials subjected to large strains, high strain rates, and high pressures.

The model is supported for plane strain, axisymmetric, and 3D solid elements and can be used in both Lagrangian and Eulerian domains.

What you learn:

• What are the Johnson, Holmquist, and Beissel (JHB) And Johnson-Holmquist (JH-2) ceramic models?
• What are JH-2 and JHB damage parameters?
• Where and for what materials, it can be used?
• How to define and use Johnson, Holmquist, and Beissel (JHB) And Johnson-Holmquist (JH-2) ceramic models?
• What is Hugoniot elastic limit?

• How to:
• set up Abaqus/CAE for built-in material subroutine?
• define damage of brittle materials in Abaqus?
• define field variables for the built-in material model in Abaqus?
• run Abaqus with a built-in VUMAT Subroutine?
• perform single element analysis?
• simulate high-velocity impact in Abaqus?
• visualize the damage results?

Overview about VUMAT for the JHB and JH-2 ceramic model

1. Introduction to Johnson, Holmquist, and Beissel (JHB) And Johnson-Holmquist (JH-2) ceramic models
2. JH-2 and JHB parameters
3. Use the model in Abaqus
4. Workshop 1: JH-2 single element tests
5. Workshop 2: JHB single element tests
6. Workshop 3: High-velocity impact of a ceramic target (JHB built-in material model)
7. Workshop 4: High-velocity impact of a ceramic target (JH-2 built-in material model)
8. Workshop 5: High-velocity impact of a ceramic target (Drucker-Prager material model)
9. Additional modeling issues
10. Limitations