A unified model of initiation and growth of fatigue macrocracks. part 3. Stage of growth of a macrocrack

被引：4

作者：

Ostash, OP ^{[1
]}

Panasyuk, VV ^{[1
]}

机构：

[1] Ukrainian Acad Sci, Karpenko Physicomech Inst, Lviv, Ukraine

来源：

MATERIALS SCIENCE | 1999年 / 35卷 / 03期

关键词：

D O I：

10.1007/BF02355474

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

From a common viewpoint, fatigue fracture of materials is simulated by the process of initiation of an initial macrocrack of length a(i) = d* (d* is the constant of the material), which is successively (stepwise) repeated at the stage of its growth. As a result, the diagram "range of local stresses - period of initiation of an initial macrocrack" or ''range of local strains - period of initiation of an initial macrocrack," which was determined for notched specimens, can be used fur the construction of the diagram "growth rate of a macrocrack - range of the stress intensity factor" or "growth rate of a macrocrack - range of local strains," respectively, if the crack is presented as a sharp notch with effective rounded radius rho(eff) = d* of the tip.

引用

页码：299 / 309

页数：11

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