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- W47354865 abstract "Abstract : In the swage autofrettage process, partial autofrettage was achieved by driving an oversized mandrel through the cylinders to cause plastic deformation. In this work, we made experimental and theoretical investigations of residual stresses in a swaged asymmetric thick-walled cylinder with small wall variations. Hoop and radial residual stress distributions, as well as angular hoop stress variations at the inside and outside diameter of the cylinder, were determined by using a single-exposure position-sensitive scintillation x-ray diffraction detection system. Our experimental results were in good agreement with the residual stress distributions predicted from Tresca's hydraulic autofrettage model. Deviations of hoop residual stress at the bore may be attributed to Bauschinger's effect. Finite element analysis using ABAQUS code on a Convex supercomputer was used to model the swage autofrettage process. Small angular residual stress variations were predicted due to the eccentricity of the cylinder. The finite element model predictions of residual stress distribution were in general agreement with experimental results except near the bore. Preliminary results of an alternative finite element method showed a reduced compressive hoop stress near the bore, similar to the results obtained by assuming Bauschinger's effect. Residual Stress, Finite Element Analysis, Pressure Vessel, Reverse Yielding, Eccentric Cylinder, X-Ray Diffraction, Swage Autofrettage, Bauschinger's Effect, ABA US Code" @default.
- W47354865 created "2016-06-24" @default.
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- W47354865 date "1992-04-01" @default.
- W47354865 modified "2023-09-27" @default.
- W47354865 title "Characterization of Residual Stresses in an Eccentric Swage Autofrettaged Thick-Walled Steel Cylinder" @default.
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