A three-dimensional formula for determining stress intensity factors in finite element analysis of cracked bodies

被引：10
作者：
He, WJ
Lin, Y
Ding, HJ
机构：
[1] ZHEJIANG UNIV,DEPT MECH,HANGZHOU 310027,PEOPLES R CHINA
[2] ZHEJIANG UNIV,DEPT CIVIL ENGN,HANGZHOU 310027,PEOPLES R CHINA
来源：
ENGINEERING FRACTURE MECHANICS | 1997年 / 57卷 / 04期
关键词：
stress intensity factor; finite element method; 20-node isoparametric quarter-point element;
D O I：
10.1016/S0013-7944(97)00020-9
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A three-dimensional crack opening displacement correlation formula to calculate stress intensity factors is derived for 20-node collapsed isoparametric quarter-point elements. This formula has one order higher accuracy than the one usually used. Numerical results show that the new formula is insensitive to the variation of element size as compared to the old one for the finite element analysis of three-dimensional fracture problems. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：409 / 415
页数：7
相关论文
共 11 条
[1]  
*ASTM DES, 1976, E39974 ASTM 10
[2]   A MODIFIED LINEAR EXTRAPOLATION FORMULA FOR DETERMINATION OF STRESS INTENSITY FACTORS [J].
CHEN, LS ;
KUANG, JH .
INTERNATIONAL JOURNAL OF FRACTURE, 1992, 54 (01) :R3-R8
[3]   A DISPLACEMENT EXTRAPOLATION METHOD FOR DETERMINING THE STRESS INTENSITY FACTORS ALONG FLAW BORDER [J].
CHEN, LS ;
KUANG, JH .
INTERNATIONAL JOURNAL OF FRACTURE, 1992, 57 (04) :R51-R58
[4]  
CHEN SK, 1970, ENG FRACT MECH, V2, P1
[5]   STRESS-INTENSITY FACTOR COMPUTATION IN 3 DIMENSIONS WITH QUARTER-POINT ELEMENTS [J].
INGRAFFEA, AR ;
MANU, C .
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1980, 15 (10) :1427-1445
[6]  
KOBAYASHI AS, 1983, P INT C FRACT MECH M
[7]   FINITE-ELEMENT METHODS IN FRACTURE-MECHANICS [J].
LIEBOWITZ, H ;
MOYER, ET .
COMPUTERS & STRUCTURES, 1989, 31 (01) :1-9
[8]   STRESS INTENSITY FACTORS IN ANISOTROPIC BODIES USING SINGULAR ISOPARAMETRIC ELEMENTS [J].
SAOUMA, VE ;
SIKIOTIS, ES .
ENGINEERING FRACTURE MECHANICS, 1986, 25 (01) :115-121
[9]   CRACK EXTENSION MODELING WITH SINGULAR QUADRATIC ISOPARAMETRIC ELEMENTS [J].
SHIH, CF ;
DELORENZI, HG ;
GERMAN, MD .
INTERNATIONAL JOURNAL OF FRACTURE, 1976, 12 (04) :647-651
[10]  
SIH GC, 1976, HDB STRESS INTENSITY
12