HYDRODYNAMIC MODEL FOR PENETRATION OF EXTENDED PROJECTILES WITH CONSIDERATION OF MATERIAL COMPRESSIBILITY
Problems to predict penetration of high-velocity extended projectiles (velocity of some km/s) into different targets are important from the practical viewpoint. One can consider, for example, shaped charge jets, formed by explosion of axially symmetric charge of explosion with a hollow and a liner at one end, as such projectiles. The influence of strength properties of material is not considerable at the said velocities, and the penetration takes place in the regime, close to hydrodynamic one (with flowingapart of materials of projectile and target). The paper presents the calculation results for features of penetration of extended metal projectiles into different targets, taking into account the compressibility of materials. Within the frames of hydrodynamic model the conditions at the surface of contact of the impacting jets are determined using Bernoulli equation, written taking into account the jet material density variation. The initial velocities of interaction are taken as to 15 km/s for the calculations. In the case of interaction of metal projectiles with metal targets the correction to the penetration depth for materials with compressibility properties, differing from each other considerably, can be at 10% level. It can reach greater value (to 15%～20%) when extended projectiles penetrate water or soils.
S.V. Fedorov Ya.M. Bayanova
Bauman Moscow State Technical University, 105005 Moscow, 2nd Baumanskaya Str. 5, Russia
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1032-1039
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）