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ASTM Selected Technical Papers
Flaw Growth and Fracture
By
JM Barsom
JM Barsom
1
United States Steel Corporation Research Laboratory
,
Monroeville, Pa.
;
symposium chairman
.
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ISBN-10:
0-8031-0356-5
ISBN:
978-0-8031-0356-6
No. of Pages:
531
Publisher:
ASTM International
Publication date:
1977

Some metals exhibit slow crack growth prior to instability under rising load. This paper is concerned with an elastic-plastic finite element plane-stress analysis of stable and catastrophic crack growth in a center-cracked panel of a ductile material, subjected to a monotonically increasing applied stress. The stable crack growth phenomenon is modeled by incorporating a local failure criterion in the stress-analysis procedure. An automatic reidealization procedure is developed to refine the finite element mesh at the new crack-tip position before external load is increased. The method is applied to study the crack-growth behavior of geometrically similar panels of different material stress-strain curves, and results are compared with experiment. The effects of some important parameters on crack growth and stability under rising load are discussed.

1.
Chitaley
,
A. D.
and
McClintock
,
F. A.
,
Journal of Mechanics and Physics of Solids
 0022-5096, Vol.
19
,
1971
, pp. 147-163.
2.
McClintock
,
F. A.
,
Journal of Applied Mechanics; Transactions
,
American Society of Mechanical Engineers
,
12
1958
, pp. 582-588.
3.
Kobayashi
,
A. S.
,
Chiu
,
S. T.
, and
Beeuwkes
,
R.
,
Engineering Fracture Mechanics
 0013-7944, Vol.
5
,
1973
, pp. 293-305.
4.
Anderson
,
H.
,
Journal of Mechanics and Physics of Solids
 0022-5096, Vol.
21
,
1973
, pp. 337-356.
5.
Anderson
,
H.
,
International Journal of Fracture
, Vol.
9
,
1973
, pp. 231-233.
6.
Miller
,
R. E.
,
Backman
,
B. F.
,
Hansteen
,
H. B.
,
Lewis
,
C. M.
,
Samuel
,
R. A.
, and
Varanasi
,
S. R.
, “
Recent Advances in Computerized Aerospace Structural Analysis and Design
,”
Second National Symposium on Computerized Structural Analysis and Design
,
Washington, D.C.
, 29–31 March 1976.
7.
Newman
,
J. C.
, Jr.
, “
A Finite Element Analysis of Fatigue Crack Closure
,”
ASTM Eighth National Symposium on Fracture Mechanics Providence, R.I.
, 26–28 Aug. 1974.
8.
Varanasi
,
S. R.
and
Carey
,
G. F.
, “
Elasto-Plastic Analysis of Plane Structures by the Finite Element Displacement Method
,”
Boeing Co. Document
No. D6-24524,
12
1970
.
9.
Tocher
,
J. L.
and
Varansi
,
S. R.
, “
Finite Element Analysis of Plasticity Problems
,”
ASCE Joint Specialty Conference on Optimization and Nonlinear Problems
,
Chicago
, 18–20 April 1968.
10.
Kaufman
,
J. G.
and
Holt
,
M.
, “
Fracture Characteristics of Aluminum Alloys
,” Technical Report No. 18,
ALCOA Research Laboratory
.
11.
Feddersen
,
C. E.
,
Simonen
,
F. A.
,
Hulbert
,
L. E.
, and
Hyler
,
W. S.
, “
An Experimental and Theoretical Investigation of Plane Stress Fracture of 2024-T351 Aluminum Alloy
,” NASA Report CR-1678,
National Aeronautics and Space Administration
, Washington, D.C.,
09
1970
.
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