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TECHNICAL PAPERS

Strip Yield Analysis of Plastic Zone Coalescence for Collinear Edge Crack and Internal Crack in a Semi-Infinite Sheet

[+] Author and Article Information
Toshihiko Nishimura

Mitsubishi Heavy Industries, Ltd., Nagoya Aerospace Systems Works, Nagoya 455-8515, Japan

J. Pressure Vessel Technol 122(1), 86-89 (Aug 31, 1999) (4 pages) doi:10.1115/1.556144 History: Received November 24, 1998; Revised August 31, 1999
Copyright © 2000 by ASME
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References

Hartranft, R. J., and Sih, G. C., 1973, “Alternating Method Applied to Edge and Surface Crack Problems,” Methods of Analysis and Solutions of Crack Problems, Noordhoff International Publishing, pp. 179–238.
Tada, H., Paris, P. C., and Irwin, G. R., 1985, The Stress Analysis of Cracks Handbook, 2nd Edition, Paris Productions Incorporated (and Del Research Corporation).
Nishimura,  T., 1995, “Collinear Internal Cracks and Edge Crack in a Semi-Infinite Sheet Subjected to Arbitrary Tractions,” ASME J. Pressure Vessel Technol., 117, pp. 256–259.
Nishimura, T., and Sasajima, M., 1990, “Coalescence Criteria for Coplanar Multiple Surface Cracks,” JSASS 28th Aircraft Symposium, National Education Center, Tokyo, Japan, pp. 72–75.
Swift,  T., 1994, “Damage Tolerance Capability,” Int. J. Fatigue, 16, No. 1, pp. 75–94.
Isida,  M., and Tsunada,  T., 1979, “1 Chokusenjou ni Ninni ni Bunpu suru Kiretsugunn no Dugdale Soseiiki (Dai 1 pou, 1 Chokusenjou no 2 ko no Kiretsu) (in Japanese),” Trans. Jpn. Soc. Mech. Eng., Ser. A, 45, pp. 346–354.
Dugdale,  D. S., 1960, “Yielding of Steel Sheets Containing Slits,” J. Mech. Phys. Solids, 8, pp. 100–104.
Rice,  J. R., 1968, “A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks,” ASME J. Appl. Mech., 35, pp. 379–386.

Figures

Grahic Jump Location
Edge crack and internal crack in a semi-infinite sheet
Grahic Jump Location
Superposition for a semi-infinite sheet problem
Grahic Jump Location
Normalized remote stress σ/σys causes the plastic zones to touch
Grahic Jump Location
Normalized plastic zone size R1+/S ahead of edge crack tip—(a) a1/b=0.05–0.4; (b) a1/b=0.5–0.9
Grahic Jump Location
Normalized CTOD δ1+01+ ahead of edge crack tip
Grahic Jump Location
Normalized CTOD δ202 ahead of inner crack tip
Grahic Jump Location
Normalized CTOD δ2+02+ ahead of inner crack tip

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