NUMERICAL PROCEDURES TO MODEL DUCTILE CRACK EXTENSION

被引:9
作者
DODDS, RH [1 ]
TANG, M [1 ]
ANDERSON, TL [1 ]
机构
[1] TEXAS A&M UNIV SYST,DEPT MECH ENGN,COLL STN,TX 77843
关键词
D O I
10.1016/0013-7944(93)90286-2
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Experimental studies demonstrate a significant increase in the cleavage fracture toughness (J(c)) for shallow notched bend and tensile specimens. Dodds and Anderson have proposed a micromechanics model for cleavage that predicts the specimen size dependence of fracture toughness, This effort extends the micromechanics model to include the influence of ductile crack extension prior to cleavage. The present discussion focuses on the numerical techniques required to include finite-strain plasticity and crack growth. Key results are presented for the small-scale yielding problem to demonstrate the usefulness of these numerical procedures to model ductile crack growth.
引用
收藏
页码:253 / 264
页数:12
相关论文
共 23 条
[1]  
ANDESON TL, 1991, J TEST EVAL, V19, P132
[3]  
Dean RH, 1980, QUASISTATIC STEADY C, V700, P383
[4]   ANALYSIS OF ROTATION AND STRESS RATE IN DEFORMING BODIES [J].
DIENES, JK .
ACTA MECHANICA, 1979, 32 (04) :217-232
[5]   A FRAMEWORK TO CORRELATE A/W RATIO EFFECTS ON ELASTIC-PLASTIC FRACTURE-TOUGHNESS (JC) [J].
DODDS, RH ;
ANDERSON, TL ;
KIRK, MT .
INTERNATIONAL JOURNAL OF FRACTURE, 1991, 48 (01) :1-22
[6]   NUMERICAL TECHNIQUES FOR PLASTICITY COMPUTATIONS IN FINITE-ELEMENT ANALYSIS [J].
DODDS, RH .
COMPUTERS & STRUCTURES, 1987, 26 (05) :767-779
[7]  
DODDS RH, 1985, INT J ENG COMPUTERS, V13, P18
[8]  
Green AE., 1965, ARCH RATION MECH AN, V18, P251, DOI [10.1007/BF00251666, DOI 10.1007/BF00251666]
[9]  
HALLQUIST JO, UCID18822 LAWR LIV L
[10]  
HALLQUIST JO, UCID19677 LAWR LIV L