Engineering, 05.05.2020 06:59 floihqrrigweo

A closed-end cylinder is made of 7079-T651 aluminum alloy. The cylinder has an inside diameter D=1000 mm, has a wall thickness h=20 mm, and is subjected to an internal pressure p=6.0 MPa. Determine the length of crack (2a) required to cause fracture at this pressure if plane strain conditions are assumed to be satisfied. The inside of the cylinder is covered with a thin layer of rubber to prevent leakage.

Take KIC=26 MPa m . From Strength of Materials: a closed cylindrical pressure vessel ÏÎ¸Î¸ = pr t , Ï zz = pr 2t . You can use the stress intensity factor solution for a flat plate with an internal crack for K1 , since the effect of curvature is negligible. If the crack with length 2a=19.1 mm is circumferential instead of longitudinal for the cylinder, determine the internal pressure that will cause fracture.

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A closed-end cylinder is made of 7079-T651 aluminum alloy. The cylinder has an inside diameter D=100...

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