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Updated: Dec 22, 2025
09:12
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
8.8K
Acceleration Characteristics of Discrete Fragments Generated from Explosively-Driven Cylindrical Metal Shells
Mingxue Zhou1, Cheng Wu1, Fengjiang An1
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
Materials (Basel, Switzerland)
|May 6, 2020
Summary
A new theoretical model accurately predicts fragment acceleration from exploding warhead shells by accounting for shell disintegration and gas leakage. This breakthrough improves warhead design by providing a more realistic understanding of fragment dynamics.
Area of Science:
- Explosives Engineering
- Warhead Design
- Fragment Dynamics
Background:
- Predicting fragment acceleration from explosively-driven cylindrical shells is crucial for warhead design.
- Existing models often oversimplify or ignore shell disintegration and gas leakage effects.
Purpose of the Study:
- To develop a theoretical model for predicting the acceleration of discrete fragments from disintegrating warhead shells.
- To incorporate the effects of shell disintegration and gas leakage into fragment acceleration predictions.
Main Methods:
- Developed an equation of motion for the cylindrical shell and internal detonation gas.
- Integrated equations for locally isentropic gas expansion and modified gas leakage.
- Solved coupled differential equations for theoretical analysis.
Main Results:
- The proposed model accurately predicts fragment acceleration.
- Demonstrated good agreement with experimental data and numerical simulations.
- Provided insights into the interaction between fragment acceleration and gas outflow.
Conclusions:
- The developed theoretical model is suitable for predicting fragment acceleration from disintegrated warhead shells.
- The model enhances understanding of complex phenomena in explosive fragmentation.
- This work offers a more realistic approach to warhead performance analysis.
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