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平面冲击波压缩下氧化铝陶瓷的动态强度

DOI: 10.11858/gywlxb.2007.02.003, PP. 129-135

Keywords: 氧化铝陶瓷,屈服准则,动态压缩强度,平板冲击实验

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Abstract:

简述了一维应变压缩条件下的材料动态强度表征,指出了静水压力和高应变率效应的强度影响。基于Drucker-Prager屈服准则,提出了Hugoniot弹性极限表征的修正形式。进行了氧化铝陶瓷平板撞击实验,采用VISAR测试了氧化铝陶瓷样品的自由面质点速度历程,讨论了氧化铝陶瓷动态压缩强度的测定和存在的问题,对实验现象进行了一定的探讨。结果表明,材料动态强度的表征与实验测定之间存在相当大的差距。

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