Assessment of the local thin area should be undertaken for both tension and compression bending. In this paper, simplified reference stresses for a flaw in a cylinder are proposed. By using these results, a newly developed p-M (internal pressure ratio and external bending moment ratio) diagram which can evaluate the collapse condition for pressure equipment such as vessels, piping, and storage tanks with a local thin area simultaneously subjected to internal pressure p and external bending moment M due to earthquake, etc., is proposed. The p-M line is verified by comparison with the finite element analysis results and the numerous results of experiment for a cylinder with a volumetric flaw obtained through the reference literatures. It was clarified that the differences in collapse limit between the p-M line and DNV guideline under both internal pressure and compression moment became evident where the outer diameter/wall thickness of a cylinder is large and the yield ratio of the material is small.

1.
BS 7910
, 1999, “
Guide on Methods for Assessing the Acceptability of Flaws in Fusion Welded Structures
.”
2.
API
, 2000, “
Recommended Practice for Fitness-for-Service
,” API 579, American Petroleum Institute, Washington, DC.
3.
Recommended Practice DNV-RP-F101, 2004, “
Corroded Pipelines
,” Det Norske Veritas.
4.
Vieth
,
P. H.
, and
Kiefner
,
J. F.
, 1993, “
Database of Corroded Pipe Tests
,” PR-218–9206, Kiefner and Associates, Inc.
5.
High Pressure Gas Safety Institute of Japan
(KHK), 1999, Report on Flaw Evaluation of Corroded Vessels, in Japanese.
6.
Hasegawa
,
K.
, 1998, “
Japanese Experimental Data on Fracture Strength of Carbon Steel Pipes With Erosion-Corrosion Thinning
,”
ASME Code Section XI Meeting
,
WG on Pipe Flaw Evaluation Orlando, FL
, Aug. 10.
7.
Ahn
,
S. H.
,
Yoo
,
Y. S.
, and
Ando
,
K.
, 1997, “
Plastic Collapse Behavior of a Pipe With Load Wall Thinning Part Subjected to Bending Moment
,”
Preprint of Meeting of Mechanical Society of Japan
, pp.
139
140
, in Japanese.
8.
Yoshikawa
,
M.
, and
Horikawa
,
H.
, 2005, “
Structural Strength of Corroded Steel Pipe Under Combined Loading
,”
Preprint of Meeting of Mechanical Society of Japan
, No.
05–27
, pp.
470
471
, in Japanese.
9.
Willoughby
,
A. A.
, and
Davey
,
T. G.
, 1989, “
Plastic Collapse in Part-Wall Flaws in Plates
,” ASTM No. STP 1020, pp.
390
409
.
10.
Sattari-Far
,
I.
, 1994, “
Finite Element Analysis of Limit Loads for Surface Flaws in Plates
,”
Int. J. Pressure Vessels Piping
0308-0161,
57
, pp.
237
243
.
11.
Folias
,
E. S.
, 1999, “
Failure Correlation Between Cylindrical Pressurized Vessels and Flat Plates
,”
Int. J. Pressure Vessels Piping
0308-0161,
76
, pp.
803
811
.
12.
Chell
,
G. G.
, 1990, “
Application of the CEGB Failure Assessment Procedure, R6, to Surface Flaws
,” ASTM No. STP1074, pp.
525
544
.
13.
Zahoor
,
A.
, and
Norris
,
D. M.
, 1984, “
Ductile Fracture of Circumferentially Cracked Type-304 Stainless Steel Pipes in Tension
,”
Transactions of the ASME
,
106
, pp.
399
404
.
14.
ABAQUS, 2004, Finite Element Computer Program, Version 6.4-1, Hibbitt, Karlsson and Sorensen, Inc., Pawtucket, RI, USA.
15.
FEA-CRACK, Version 2.7.000, 2005, Structural Reliability Technology, Inc.
16.
FEA-FLAW, Version 1.2.000, 2005, Structural Reliability Technology, Inc.
17.
ASME
2004, B&PV Code, Sec. VIII, Division 2, Appendix 6, pp.
6
153
.
18.
Hasegawa
,
K.
,
Miyazaki
,
K.
, and
Nakamura
,
I.
, 2005, “
Failure Mode and Failure Strengths for Wall Thinning Straight Pipes and Elbows Subjected to Cyclic Loading
,” PVP2005–71358, Jul. 17–21.
19.
Frost
,
H. J.
, 1959, “
A Relation Between the Critical Alternating Propagation Stress and Flaw Length for Mild Steel
,”
Proc. Inst. Mech. Eng.
0020-3483,
173
(
35
), pp.
811
827
.
20.
ASME
, 2004, B&PV Code, Sec. III, Division I, Appendix 1.
21.
Miller
,
C. D.
, and
Mokhtarian
,
K.
, 1995, “
Proposed Rules for Determining Allowable Compressive Stresses for Cylinders, Cones Spheres and Formed Head
,” WRC Bulletin 406, Welding Research Council.
22.
Donnell
,
L. H.
, 1943, “
A New Theory for the Buckling of Thin Cylinders Under Axial Compression and Bending
,”
Trans. ASME
0097-6822,
56
(
11
), pp.
795
806
.
23.
High Pressure Gas Safety Institute of Japan
(KHK), 1997, “
Earthquake-Resistant Design Guideline
,” KHK E012-1-1997, in Japanese.
This content is only available via PDF.
You do not currently have access to this content.