三维高速冲击动力有限元滑移面算法
The Sliding Surface Algorithms in Three Dimensional Dynamic Finite Element Code
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摘要: 本文给出三维高速冲击动力有限元滑移面算法.该算法不但能保证单元结点的动量守恒、动量矩守恒,而且由实例计算表明该算法在处理高速穿、破甲过程中是稳定和有效的.Abstract: In this paper,the sliding surface algorithms in dynamic finite element analysis ofhigh velocity impact are presented.With these algorithms,the momentum and the angular momentum of the element can be conserved.The calculated examples show that the calculation using these algorithms in dynamic finite element analysis of high velocity is valid and stable.
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Key words:
- impetus finite element /
- high speed impact /
- armour piercing
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[1] Johnson,G.R.,High velocity impact calculations in three dimension J.Appl.Mech.,44(1977). [2] Johnson,G.R.,D.D.Colby and D.J.Vavick,Three dimension computer code for dynamic response of solids to intense impulsive loads,Int.J.for Num.Meth.in Eng.,14(1979). [3] Johnson,G.R.and R.A.Stryk,Eroding interface and improved tetrahedral element algorithms for high-velocity impact computations in three dimension,Int.J.Impact Eng.,5(1987). [4] 钱伟长,《穿甲力学》,国防工业出版社(1984). [5] 宋顺成,应力协调迭代法在高速冲击动力有限元中的应用,应用数学和力学,10(2)(1989),145-152. [6] 周培基,A.K.霍普肯斯,《材料对强冲击载荷的功态响应》(中译本),科学出版社(1986). [7] 宋顺成,高速冲击数值计算及计算机模拟.上海工业大宇博士论文(1987). -
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