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- W2029774015 abstract "This investigation is concerned with the stress concentrations occurring around forging rings of the type used to connect cylindrical ducts to large spherical or part-spherical pressure vessels. The stress distributions in the vicinity of two nozzles having different shaped transition rings have been found experimentally by the use of a model pressure vessel. Two different conditions of loading were studied, viz. loads applied along the axis of a nozzle, and internal pressure applied to the vessel. Electrical resistance strain gauges were used for strain measurement. Some theoretical methods of analysis were considered and stress values estimated by these methods compared with the experimental results. A modification of a theoretical analysis for local loading of a solid cylindrical attachment on a spherical shell was found suitable for predicting maximum stresses due to an axial load. To predict stresses due to internal pressure it was necessary to split the total effect into one component due to pressure end load and the other due to the interruption of a uniform biaxial stress field in a flat plate by a reinforced opening. The first is a particular case of axial loading while the second may be calculated by a modification of the theory of rim-reinforced openings in plates. Comparison between the stresses measured in the two different model forging rings (one providing 25 per cent more reinforcement than the other) shows a marginal reduction in maximum stress for the heavier specimen. Stress concentration factors (with reference to the design stress in the spherical shell) due to pressure were estimated to be as low as 1·7 and 1·9 respectively for the two forgings." @default.
- W2029774015 created "2016-06-24" @default.
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- W2029774015 date "1964-02-01" @default.
- W2029774015 modified "2023-09-25" @default.
- W2029774015 title "Stresses due to axial loads and internal pressure on forged nozzles in a spherical pressure vessel" @default.
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- W2029774015 doi "https://doi.org/10.1016/0020-7403(64)90007-4" @default.
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