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α-锆低压动态力学特性研究

DOI: 10.11858/gywlxb.2007.02.012, PP. 188-192

Keywords: &alpha,-锆,Johnson-Cook本构参数,自由面速度剖面

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Abstract:

在3.3×10-4~1.5×103s-1应变率范围内获得了α-锆的应力-应变曲线,给出了Johnson-Cook本构拟合参数。利用含动态损伤与断裂的一维程序,较好复显了在峰值应力4.3~5.1GPa范围测量的α-锆自由面速度剖面,验证了确定的α-锆低压动态力学参数的合理性。

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