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- W2388356749 abstract "The exterior surface crack is the most dangerous among crack defects of oil thimble.And it can be turned into surface circumferential crack and surface axial crack.In this paper,three dimensional crack problems can be transformed into two dimensional problems.Energy difference rate method is applied to obtain a simplified closed form solution of the Bernauli's equation about crack opening displacement.The closed form solution of stress intensity factors is ultimately deduced in the oil thimble with semi-ellipse outer surface crack or inner surface crack under the axial traction load.The analytical solution of stress intensity factors is proved right and effective by boundary element method.For the axial crack,stress intensity factor difference between experiential formula and boundary element method.Finally,influence on safety of oil thimble is analyzed by the size of crack in engineering application." @default.
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- W2388356749 date "2007-01-01" @default.
- W2388356749 modified "2023-09-25" @default.
- W2388356749 title "Influence on Load-Bearing Capability of Oil Thimble by Crack Defect" @default.
- W2388356749 hasPublicationYear "2007" @default.
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