Prediction of the ballistic limit of an aluminium sandwich panel

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Campbell, J.^1 ; De Vuyst, T.^1 ; Vignjevic, R.^1 ; Hughes, K.^1

Brunei University London, Uxbridge

UB8 3PH, United Kingdom^1

关键词: Aluminium sandwich panel;    Ballistic Limit;    Exit velocity;    Explicit finite elements;    Model results;    Modeling behaviour;    Predictive modelling;    Primary parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032089/pdf
DOI  :  10.1088/1742-6596/734/3/032089

来源: IOP

【 摘 要 】

This paper presents research on modelling the impact of a 150g projectile on a 35mm thick aluminium sandwich panel. The objective of the work is a predictive modelling capability for the ballistic limit of the panel. A predictive modelling capability supports the design of capture and deorbit missions for large items of space debris such as satellites and rocket upper stages. A detailed explicit finite element model was built using the LSDYNA software and results were compared with experimental data for the projectile exit velocity to establish key parameters. The primary parameters influencing the model behaviour were the strength and failure of the aluminium face sheets and the friction between projectile and panel. The model results showed good agreement with experimental results for ogive nose projectiles, but overestimated the exit velocity for flat nose projectiles.