...: 自相似函数 ; 扩展裂纹 ; 动态应力强度因子 ; 位错分布函数 [gap=584]Key words: self-similar functions; propagation crack; dynamic stress intensity factor; dislocation distribution function ..
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...环境致裂，扩展裂纹，力学场，数值模拟 [gap=1237]Key words:welded joint, environmentally assisted cracking, growing crack, mechanical field, numerical simulation ...
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Ⅰ型动态扩展裂纹 mode I dynamic growing crack
裂纹扩展 [力] crack propagation ; Crack Extension ; crack expanding
快速裂纹扩展 RCP
裂纹扩展速率 [力] crack growth rate ; fatigue crack growth rate ; crackle expanding speed
稳定裂纹扩展 [力] stable crack growth ; Stable crack extension
亚临界裂纹扩展 [力] subcritical crack growth ; subcritical crack propagation
定常裂纹扩展 [力] steady crack growth
裂纹扩展应变计 crack propagation strain gauge
得到了快速扩展裂纹的动态应力强度因子。
Finally, the dynamic stress intensity factors of the fast-propagating crack is obtained.
残余压应力使缺口处裂纹闭合力增大甚至可出现非扩展裂纹。
Compressive residual stress increases the crack closure effect at the notch and may lead to a non-propagating crack.
分析与计算结果表明，黏性效应是扩展裂纹尖端场的一个重要因素。
The analytical and computational results indicate that the viscosity effect is an important factor in propagating crack-tip fields.
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