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摘要: 针对混凝土的破坏模式,将最初用于研究岩石破碎的连续损伤模型加入到三维非线性有限元动力分析程序LS-DYNA中。利用数值模拟方法研究了弹丸对混凝土的斜侵彻过程,对弹丸在混凝土靶中的几种可能运动轨迹进行了分析,得到了影响弹丸轨迹的几个因素。Abstract: The continuum damage model which was originally developed to study rock fragmentation was implemented into the transient dynamic explicit finite element code LS-DYNA3D, and then the code is used for the numerical simulation of projectiles' penetrating the concrete. The possible traces of the projectiles in the target are investigated and the factors dominating the trace are found.
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Key words:
- concrete /
- continuum damage model /
- numerical simulation
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Chen E P. Simulation of Concrete Perforation Based on a Continuum Damage Model [R]. DE-95000544, 1994. Zhang Z Y. Continuum Damage Model of Concrete Penetrated by Projectiles [J]. Explosion and Shock Waves, 2003, 23(Suppl): 67-68. (in Chinese) 张震宇. 弹丸对混凝土靶侵彻贯穿的连续损伤模型 [J]. 爆炸与冲击, 2003, 23(增): 67-68. Budiansky B, O'Connell R J. Elastic Moduli of a Cracked Solid [J]. Int J Solids Struct, 1976, 12: 81-97. Grady D E, Kipp M E. Continuum Modeling of Explosive Fracture in Oil Shale [J]. International Journal of Rock Mechanics and Mining Science, 1980, 17: 147-157. Grady D E. The Mechanics of Fracture under High-Rate Stress Loading [A]//Preprints of the William Prager Symposium on Mechanics of Geomaterials: Rocks, Concrete and Soils [C]. Evanston, Illinois: Northwestern University, 1980: 149-188.
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