在温度88~573 K和应变率0.001~2 000 s-1的条件下，通过温度与应变率耦合的静态和动态分离式Hopkinson压杆实验，并以初步获得的炮钢材料动态本构模型基本参数为基础，通过进一步的优化及Taylor杆冲击实验，验证并最终确认了炮钢材料动态本构模型参数，模型预测与实验结果相对误差小于5%. 验证结果表明，建立的炮钢材料动态本构模型能真实地反映其动态响应。
Abstract
The static and dynamic SHPB (split Hopkinson pressure bar) tests are made on a gun steel material at the temperature of 88~573 K and the strain rate of 0.001~2 000 s-1. The preliminarily obtained parameters of constitutive model of some gun steel material are verified and confirmed by the optimization procedure and Taylor impact test. The difference between the predicted and experimental results is less than 5%. The experimental results show that the proposed dynamic constitutive model can reflect the dynamic response of gun steel material under loads effectively.
关键词
兵器科学与技术 /
炮钢材料 /
本构模型 /
Hopkinson压杆实验 /
Taylor杆冲击实验
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Key words
ordnance science and technology /
gun steel material /
constitutive model /
Hopkinson pressure bar test /
Taylor impact test
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