Crack path kinking under generalized stress state

被引：2

作者：

Demeshkin, A. G. ^{[1
]}

Kornev, V. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Lavrentev Inst Hydrodynam, Siberian Div, Novosibirsk 630090, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2009年 / 50卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

brittle and viscous fracture; crack branching and kinking; critical stress-intensity factor;

D O I：

10.1007/s10808-009-0071-5

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Results of experimental investigations of three-point asymmetric bending applied to beams made of materials with substantially different structural, strength, and strain characteristics are presented. The effect of different types of fracture on the formation of crack kinks under a generalized stress state is revealed. Strength curves of the Coulomb-Mohr type are obtained for Plexiglas and fine-grained concrete, which are characterized by the quasi-brittle and brittle types of fracture, respectively. Dependences of the kink angles of the crack paths on the stress state in the case of three-point bending are described for these materials.

引用

页码：532 / 539

页数：8

共 12 条

[1]

*ALL UN RES MIN SU, 1972, CAT MECH PROP ROCKS

[2] Stability region of a close-packed layer of atoms [J].

Astapov, N. S. ;

Kornev, V. M. .

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS, 2007, 48 (01) :135-144

[3]

Erdogan F, 1963, J Basic Engng, V85, P519, DOI DOI 10.1115/1.3656897

[4] Fault branching and rupture directivity [J].

Fliss, S ;

Bhat, HS ;

Dmowska, R ;

Rice, JR .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2005, 110 (B6) :1-22

[5]

*GOST, 1985, 2550685 GOST

[6]

HENDIN D, 1969, STRENGTH PLASTICITY

[7]

[Корнев В.М. Kornev V.M.], 2007, [Известия высших учебных заведений. Строительство, Izvestiya vysshikh uchebnykh zavedenii. Stroitel'stvo], P10

[8]

Kornev V. M., 2003, FIZ MEZOMEKH, V6, P37

[9]

KORNEV VM, 2003, PRIKL MAT MEKH, V67, P1029

[10]

KOVCHIK SE, 1988, MECH FRACTURE STRENG, V3

← 1 2 →