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TECHNICAL PAPERS

The Influence of Multiple Axial Erosions on a Three-Dimensional Crack in Determining the Fatigue Life of Autofrettaged Pressurized Cylinders

[+] Author and Article Information
C. Levy

Department of Civil Engineering, Academic College of Judea and Samaria, Ariel 44837, Israelon leave from the Department of Mechanical Engineering, Florida International University, Miami, FL 33199

M. Perl

Faculty of Engineering Sciences, Ben Gurion University of the Negev, Beer Sheva, 84105, Israele-mail: merpr01@bgumail.bgu.ac.il

Q. Ma

Mechanical Engineering Department, Carnegie-Mellon University, Pittsburgh, PAformer Graduate Student, Department of Mechanical Engineering, Florida International University, Miami, FL 33199

J. Pressure Vessel Technol 124(1), 1-6 (May 22, 2001) (6 pages) doi:10.1115/1.1386656 History: Received October 17, 2000; Revised May 22, 2001
Copyright © 2002 by ASME
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References

Figures

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Model of the eroded half-cylinder with a crack emanating from the farthest erosion’s DLES; plane Z=0 is plane of symmetry
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(a) The submodel showing the toroidlike finite element mesh; (b) definition of the angle ϕ
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(a) Normalized effective SIFs versus ϕ for erosion curvature r/t=0.05 for a crack emanating from the central erosion, d/t=0.05,a0/t=0.05,a0/c=1,α=12 deg; (b) normalized effective SIFs versus ϕ for erosion curvature r/t=0.05 for a crack emanating from the farthest erosion, d/t=0.05,a0/t=0.05,a0/c=1,α=12 deg
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Normalized effective SIFs versus erosion curvature and ϕ for three erosions; d/t=0.05,a0/t=0.05,a0/c=0.5,α=30 deg
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Normalized effective SIFs versus erosion curvature and ϕ for three erosions; d/t=0.05,a0/t=0.05,a0/c=1,α=30 deg
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Maximums of the KI eff versus erosion curvature for three erosions; d/t=0.05,a0/t=0.05,α=30 deg
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Normalized effective SIFs versus ϕ for various erosions and one crack; d/t=0.05,d/h=0.5,a0/t=0.05,a0/c=1,α=12 deg
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Normalized effective SIFs versus erosion ellipticity and ϕ for three erosions; d/t=0.05,a0/t=0.05,a0/c=0.5,α=12 deg
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Normalized effective SIFs versus erosion ellipticity and ϕ for three erosions; d/t=0.05,a0/t=0.05,a0/c=1,α=12 deg
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Maximums of the KI eff versus erosion ellipticity for three erosions; d/t=0.05,a0/t=0.05,α=12 deg
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Maximums of the KI eff versus erosion span angle for various number of erosions and one crack; d/t=0.05,d/h=1,a0/t=0.05,a0/c=1
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Maximums of the KI eff versus erosion span angle for various crack ellipticities for three erosions; d/t=0.05,d/h=1,a0/t=0.05
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Maximums of the KI eff versus erosion number for one crack; d/t=0.05,r/t=0.1,a0/t=0.05,a0/c=1,α=12 deg
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Maximums of the KI eff versus erosion depth and various crack ellipticities for three erosions; d/h=1,a0/t=0.05,α=12 deg
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Maximums of the KI eff versus crack depth and various crack ellipticities for three erosions; d/t=0.05,d/h=1,α=7 deg

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