在低周塑性疲劳阶段构件的疲劳开裂寿命仍可提高1倍左右。
In the low cycle plastic fatigue period, the fatigue progress life Nfcan al - so be increased by 1 time.
本文分析了裂纹塑性疲劳扩展的力学机理，提出了裂纹塑性疲劳扩展的判据。
In this paper the mechanism of plastic fatigue crack growth (PFCG) was analyzed and an appropriate criterion was proposed. Elastic-plastic (incremental) finite-element method was used to study PFCG.
该模型数学表达式具有半理论、半经验性质，能较好地反映弹塑性疲劳裂纹扩展的物理特征。
The mathematical expression of this model is half theoretical and half empirical in nature and can well represent the physical characteristics of EPFC growth.
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