Research on the Crushing Process of PELE Casing Material Based on the Crack-Softening Algorithm and Stochastic...

Area of Science:

• Computational mechanics
• Materials science
• Ballistics

Background:

• Realistic simulation of projectile penetration is crucial for engineering.
• Existing models often lack accuracy in capturing material failure dynamics.
• Penetration with Enhanced Lateral Efficiency (PELE) projectiles require advanced modeling.

Purpose of the Study:

• To enhance the simulation of PELE projectile penetration and crushing.
• To integrate stochastic failure and crack-softening algorithms into material models.
• To validate the improved simulation's accuracy against experimental data.

Main Methods:

• Theoretical analysis to determine material failure parameters (stochastic constant γ, fracture energy Gf, tensile strength σT).
• Finite element analysis using AUTODYN software.
• Qualitative and quantitative comparisons of simulation results with experimental data.

Main Results:

• The addition of stochastic failure and crack-softening algorithms improved simulation realism.
• Simulations incorporating both algorithms showed close agreement with experimental results.
• Key parameters like residual velocity and maximum radial fragment velocity were accurately predicted.

Conclusions:

• The proposed modeling approach significantly enhances the accuracy of PELE projectile simulations.
• The validated algorithms provide reliable guidance for engineering research and development.
• This work offers a more realistic computational tool for analyzing projectile-material interactions.