Study on Pressure Reconstruction Method of Explosion Shock Wave

Abstract

Shock waves are one of the primary damage parameters of an ammunition explosion. Therefore, accurately obtaining the shock wave pressure distribution law after ammunition explosion is greatly significant for the ammunition damage power evaluation and the guidance of ammunition selection in the operations course. This study established the mapping function between the surface reflected and free-field shock wave pressures, considering the altitude effect on shock wave pressure. Finite element numerical simulation analysis of typical (trinitrotoluene) TNT explosive quality and static explosion shock wave pressure test were performed, and the model calculation accuracy was verified by using the obtained shock wave pressure data. The Validation results show that the model had 84% calculation accuracy and could well reflect the explosion shock wave pressure distribution law. Furthermore, the results provided a new calculation method and scientific data support for the accurate evaluation of the damage power of an ammunition explosion. Additionally, the results are significant for applications in engineering testing and the military.

Keywords

• explosion shock wave
• mapping relation model
• finite element numerical simulation
• pressure distribution law
• static explosion test of tnt explosive