Simplified Elastic-Plastic Analysis Method Using Ke Factors Obtained for the Real Structural Model

[+] Author and Article Information
Asao Okamoto

Operation Control Department, Energy System Division, Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama, Japane-mail: asao_okamoto@ihi.co.jp

Yasuhiro Ohtake

Structure and Strength Department, Research Laboratory, Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, Japane-mail: yasuhiro_ootake@ihi.co.jp

J. Pressure Vessel Technol 125(1), 59-64 (Jan 31, 2003) (6 pages) doi:10.1115/1.1522416 History: Received September 27, 2000; Revised August 19, 2002; Online January 31, 2003
Copyright © 2003 by ASME
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ASME, 1998, Boiler and Pressure Vessel Code Sec. III, Division 1, “Rules for Construction of Nuclear Power Plant Components,” ASME, New York, NY.
Tagart, S. W., 1968, “Plastic Fatigue Analysis of Pressure Components,” ASME No. 68-PVP-3.
Langer, B. F., 1971, “Design-stress Basis for Pressure Vessels,” The William Murray Lecture, Exp. Mech.
Iida, K., Kitagawa, M., Tamura, K., Matsushita, A., Fukagawa, M., and Saiga, Y., 1980, “Safety Margin of the Simplified Elasto Plastic Fatigue Analysis Method of ASME B and PV Code Section III,” I Mech E C35/80.
Okamoto, A., Nishiguch, I., and Aoki, M, 2000, “New Secondary Stress Evaluation Criteria Suitable for Finite Element Analysis,” ICPVT-9, Vol. 2 pp. 613-620.
Okamoto, A., and Ohtake, Y., 2000, “Analytical Study on Local Plastic Area for the Evaluation of Primary plus Secondary Stress,” ASME PVP-Vol. 407 pp. 91-98.
ABAQUS, 1997, Hibbitt, Karlsson & Sorensen, Inc. “ABAQUS/Standard, Version 5.7”.


Grahic Jump Location
Strain multiplication factor by Langer 3
Grahic Jump Location
FEA model and evaluation points for a feed water nozzle
Grahic Jump Location
Thermal cycle for Ke calculation
Grahic Jump Location
Cyclic stress-strain curve used in Ke calculation
Grahic Jump Location
History of the principal and equivalent strains
Grahic Jump Location
Hysteresis of hoop stress and strain
Grahic Jump Location
Elastic-plastic equivalent strain distribution (×10−6)
Grahic Jump Location
Ke factor distribution (×10−2)




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