Notch tip stress distribution in strain hardening materials |
| |
Authors: | R C Bates A T Santhanam |
| |
Affiliation: | (1) Westinghouse R & D Center, 15235 Pittsburgh, PA, USA |
| |
Abstract: | Using the results of elastic-plastic stress analyses for notched bars, it is shown that a modified form of slip-line field solution can satisfactorily explain the variation of longitudinal stress ahead of notch tips in strain hardening materials.
Résumé En utilisant les résultats d'analyses de contrainte élastoplastique dans le cas de barres entaillées, on montre qu'il est possible d'utiliser une forme simplifiée de solution du champ des lignes de glissement pour expliquer de façon satisfaisante la variation des contraintes longitudinales en avant d'extrémités d'entaille dans des matériaux susceptibles d'un écrouissage. Nomenclature
yy
longitudinal tensile stress in the notch tip plastic zone
-
xx
transverse stress in the x-direction
-
zz
transverse stress in the z-direction
-
k
yield stress in shear
- 0
yield stress in tension
-
0
*
strain hardened yield stress (flow stress)
- 0/*
c
flow stress at notch tip
- total
total strain pl plastic strain l principal strain
- 1
c
maximum principal strain at notch tip
- 1pl
plastic strain in they-direction
- 1
cp1
E1
pl at notch tip
- eff
effective plastic strain
-
c
eff
eff at notch tip
- 0
yield strainC Stress decay constant in the notch tip region
- /epl
linear strain hardening rate
-
n
strain hardening exponent in power hardening law
- 2
flank angle of notch
-
distance from notch tip
-
p
notch tip radius
-
k
I
applied stress intensity for Mode I loading
-
E
Young's modulus
-
V
c
crack tip opening displacement |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|