Parametric equations for T-butt weld toe stress intensity factors

被引:23
作者
Brennan, FP
Dover, WD
Karé, RF
Hellier, AK
机构
[1] Australian Nucl Sci & Technol Org, Div Mat, Menai, NSW 2234, Australia
[2] Tech Software Consultants Ltd, Milton Keynes MK12 1RB, Bucks, England
[3] Univ London Univ Coll, Dept Mech Engn, NDE Ctr, London WC1E 7JE, England
关键词
T-butt; weld toe; crack; stress intensity factor; weight function; parametric equation; fatigue life; engineering design;
D O I
10.1016/S0142-1123(99)00090-0
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper describes the generation of parametric equations for weld toe stress intensity factors. The methodology employed used a two-dimensional finite element analysis to evaluate the 'crack opening' stress distribution in the uncracked plane of T-butt geometries. This was then used as input into a dedicated weight function solution for the determination of stress intensity factors. The final parametric equations describe the stress intensity factor distributions for tension and bending as a function of plate thickness, weld attachment width, weld angle, weld root radius, crack length and crack shape. The equations are compared and validated against a wide spectrum of published values and appear by comparison accurate and wide ranging. The validation exercise uncovered situations where present design guidance is unconservative. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1051 / 1062
页数:12
相关论文
共 9 条
[1]  
[Anonymous], MINITAB STAT SOFTW
[2]  
BELL R, 1985, 22ST23440210837 BSS
[3]  
Brennan F.P., 1995, DEV PARAMETRIC EQUAT
[4]  
*BS, 1991, PD6493 BS BRIT STAND
[5]  
Hall M.S, 1990, TSCMSH0244 DEP EN
[6]   AN EMPIRICAL STRESS-INTENSITY FACTOR EQUATION FOR THE SURFACE CRACK [J].
NEWMAN, JC ;
RAJU, IS .
ENGINEERING FRACTURE MECHANICS, 1981, 15 (1-2) :185-192
[7]  
NIU X, 1988, P S SURF CRACK GROWT
[8]  
*TECHN SOFTW CONS, FACTS FAT CRACK GROW
[9]  
VANSTRAALEN IJJ, 1988, WELF FAILURES NOV