OVERVIEW NO 111 - CONCEPTS FOR BRIDGED CRACKS IN FRACTURE AND FATIGUE

被引：193

作者：

COX, BN

MARSHALL, DB

机构：

[1] Rockwell International Science Center, Thousand Oaks, CA 91360

来源：

ACTA METALLURGICA ET MATERIALIA | 1994年 / 42卷 / 02期

关键词：

D O I：

10.1016/0956-7151(94)90492-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Some recent work on length scales in bridged crack problems is reviewed and enlarged upon. Fundamental differences are highlighted between the solutions obtainable from bridged crack models (nonvanishing crack tip stress intensity factor; K-tip) and traditional cohesive zone models (vanishing K-tip); and from models for which the bridging tractions are nonincreasing (softening) and increasing (hardening) functions of the crack opening displacement. The roles of length scales in determining ductility, notch sensitivity, and whether failure is catastrophic or noncatastrophic are discussed. Length scales for monotonic loading are extended to cyclic loading.

引用

页码：341 / 363

页数：23

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