ESTIMATION OF FLOW-STRESS UNDER HIGH-RATE PLASTIC-DEFORMATION
ESTIMATION OF FLOW-STRESS UNDER HIGH-RATE PLASTIC-DEFORMATION
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DOI：
10.1016/0734-743x(94)00042-u
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发表时间：
1995-04-01
影响因子：
5.1
通讯作者：
WILSON, LL
中科院分区：
文献类型：
--
作者：
HOUSE, JW;LEWIS, JC;WILSON, LL
1948年，g·i·泰勒分析了圆柱形试样对刚性铁砧的冲击。1987年，琼斯、吉利斯和福斯特对泰勒的分析进行了修正。这一修正包括了一个新的试样未变形部分的运动方程，并放宽了泰勒原作中的一个假设。虽然Jones和他的合作者能够证明一个精确解的存在，但分析的实用性受到其复杂性的严重限制。本文在该模型中引入一个近似，得到一个简单的代数公式来估计其精确解。报告了92个铜、铝和钢样品的测试结果，并用于评估琼斯、吉利斯和福斯特分析的新近似。
The impact of a cylindrical specimen against a rigid anvil was analysed in 1948 by G. I. Taylor. In 1987, Jones, Gillis and Foster proposed a modification to Taylor's analysis. This modification included a new equation of motion for the undeformed section of the specimen and relaxed one of the assumptions of Taylor's original work. While Jones and co authors were able to show the existence of an exact solution, the utility of the analysis was severely limited by its complexity. The present paper introduces an approximation into this model which produces a simple algebraic formula to estimate its exact solution. Results of 92 tests of copper, aluminum and steel specimens are reported and used to evaluate this new approximation to the Jones, Gillis and Foster analysis.