DUGDALE MODEL FOR STRAIN-HARDENING MATERIALS

被引:20
作者
CHEN, XG [1 ]
WU, XR [1 ]
YAN, MG [1 ]
机构
[1] INST AERONAUT MAT,BEIJING 100095,PEOPLES R CHINA
关键词
D O I
10.1016/0013-7944(92)90236-8
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A Dugdale model for hardening materials under plane stress conditions is proposed. Crack tip opening displacements (CTODs) of different geometries, compact, center crack tension, double edge crack tension and three point bend specimens, have been calculated by means of the weight function method. The results have been compared with the J-integral from EPRI's handbook [Y. Kumar, M. D. German and C. F. Shih, EPRI NP-1931, Project 1237-1, Technical Report (1981)] for strain hardening exponent n = 3, 5, 7, 10, 13, 16, 20 and two different Ramberg-Osgood coefficient. The results indicate that the proposed model could well correlate CTODs from the Dugdale model and the J-integral, thus it is an alternative tool to take account of the strain hardening effect in engineering applications.
引用
收藏
页码:843 / 871
页数:29
相关论文
共 22 条
[1]  
Chinese Aeronautical Establishment, 1981, STRESS INTENSITY FAC
[2]   YIELDING OF STEEL SHEETS CONTAINING SLITS [J].
DUGDALE, DS .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1960, 8 (02) :100-104
[3]   ON THE CALCULATION OF CRACK OPENING DISPLACEMENT FROM THE STRESS INTENSITY FACTOR [J].
FETT, T ;
MATTHECK, C ;
MUNZ, D .
ENGINEERING FRACTURE MECHANICS, 1987, 27 (06) :697-715
[4]  
HALL S, 1985, ASTM STP, V868, P113
[5]  
Hoffmann M, 1985, CRACK TIP OPENING DI, P57
[6]  
HUTCHINSON JW, FRACTURE MECHANICS, P515
[7]  
KUMAR V, 1981, EPRI NP1931 TECHN RE
[8]  
Newman J.C., 1968, ENG FRACT MECH, V1, P137
[9]  
NEWMAN JC, 1985, ASTM STP, V896, P139
[10]  
Newman Jr J.C., 1981, ASTM SPEC TECH PUBL, V748, P53, DOI 10.1520/STP748-EB