High strain rate fracture and impact mechanics

被引：0
|
作者：
Maekawa, I
机构：
来源：
ADVANCES IN FRACTURE RESEARCH, VOLS 1-6 | 1997年
关键词：
stress wave; dynamic stress concentration; impact fracture toughness; impact fatigue; strain rate; dynamic stress strain diagram; impact testing method;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
According to previous studies, the dynamic yield strength increases but the dynamic fracture toughness decreases with increasing loading rate. The dynamic stress concentration behavior of a strip with a shoulder fillet and the stress distribution in a bar subjected to an impact force are investigated. In these results, size dependence of the impact stress caused by the superposition of stress waves was observed. The impact fatigue life and impact fracture toughness also exhibit size dependence. In addition, dis-advantageous aspects of conventional evaluation method for the impact strength of materials and a new simple practical method are described.
引用
收藏
页码：2743 / 2754
页数：12
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