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Numerical Simulation of Conical and Linear-Shaped Charges Using an Eulerian Elasto-Plastic Multi-Material Multi-Phase
1Department of Mechanical Engineering, Kunsan National University, Gunsan 54150, Korea.
Materials (Basel, Switzerland)
|March 10, 2022
Summary
A new hydrocode simulates shaped charges, modeling explosive detonations and metal jet penetration. This computational fluid dynamics (CFD) tool accurately predicts high-velocity impacts and explosive events.
Area of Science:
- Computational physics
- Fluid dynamics
- Materials science
Background:
- Shaped charges are crucial in various applications, requiring accurate simulation methods.
- Existing models may not fully capture the complex multi-material and multi-phase dynamics involved.
Purpose of the Study:
- To develop and validate a novel hydrocode for simulating conical and linear-shaped charges.
- To accurately model the behavior of elasto-plastic solids and high explosive detonations.
Main Methods:
- Utilized an Eulerian multi-material, multi-phase flow model.
- Employed the Johnson-Cook material model and programmed burn model for solids and explosives.
- Implemented a radial return mapping algorithm for plasticity calculations.
- Applied high-resolution computational fluid dynamics (CFD) on Cartesian grids.
- Used the level-set method for interface tracking and ghost fluid method for boundary conditions.
Main Results:
- Successfully validated the hydrocode against high-speed impact problems.
- Demonstrated the code's capability to simulate metal jet evolution and penetration in shaped charges post-detonation.
Conclusions:
- The developed hydrocode provides a robust platform for simulating complex shaped charge phenomena.
- This tool enhances the predictive capability for explosive events and material deformation.
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