Numerical Simulation and Analysis on the Impact Effect of Cylindrical Projectile Impacting Shelled Explosive

Abstract:

The numerical simulation of shelled Comp.B explosive was studied following the Lee-Tarver ignition and growth model when it was impacted respectively by 4340 Steel, OFHC and 93^#W projectile with the same mass; the influences on explosive detonation of the initiation process, the material of projectile and the L/D ratio of projectile were analyzed; the critical initiation speeds of the projectiles of three different materials with different L/D ratio were gained. In order to verify the simulation results, the questions were calculated by the theoretical simplified model, the results of the theoretical calculation and the numerical simulation accorded well based on critical energy criterion. The results show that the capability of igniting explosive, the first is 93^#W, the second is OFHC, the last is 4340 Steel; The initiation point were not on the interface of shell and explosive, and the faster of the impacting velocity, the initiation point closer the interface; the bigger of the L/D ratio of projectile, the higher of the critical initiation speed.

• Periodical: Advanced Materials Research (Volume 710)
• Pages: 320-324
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.710.320
• Online since: June 2013
• Authors: Ying Zi Jiang, Wei Li Wang, Xue Feng Huang, Lei Fu, Zhuang Qing Fan
• Keywords: Critical Initiation Speed, Cylindrical Projectile, Explosion Mechanics, Impact Initiation, Shelled Explosive

References

[1] Guanren Zhang, Danian Chen. The Initiation Dynamic in Condensed Explosive, edtied by National Defense Industry Press, Beijing, (1991), in press.（In Chinese）

[2] Qun LIU, Lang Chen, Junying WU. Acta Armamentarii, Vol. 31(1) (2010), pp.69-73（In Chinese）

[3] Lin Lang, Xiaowei Chen, Jingsong Lei. Vol. 31 (2) (2011), pp.127-134.（In Chinese）

[4] Xianzhen Jia, Song Chen, Jian Yang, Jianling Wang. High Pressure Physics. Vol. 25 (5) (2011), pp.469-474. （In Chinese）

[5] Haifu Wang, Shunshan Feng. Acta Armamentarii, Vol. 17 (1) (1996), pp.79-81.（In Chinese）

[6] Chengwei Sun. Explosion Physics. edtied by Science Press, Beijing, (2011), in press.（In Chinese）

[7] Gibbs.T R, Popolato A. LASL Explosive Property Data. edtied by University of California Press, California, (1980), in press.

DOI: 10.1525/9780520313743

[8] Walker.F E, Wasley.R J. 7th Symposium on Detonation, (1968), p.9.

[9] Weidong Chen, Zhong Zhang, Jialiang Liu. Acta Armamentarii, Vol. 30 (9) (2009), pp.1187-1191.（In Chinese）