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Analysis of Residual Stress in the Rotational Autofrettage of Thick-Walled Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Autofrettage is a means of generating compressive residual stresses at the inner side of a thick-walled cylinder or hollow disk by causing nonhomogeneous plastic deformation of the material at the inner side. The presence ...
Generalized Plane Strain Study of Rotational Autofrettage of Thick-Walled Cylinders—Part II: Numerical Evaluation
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The theoretical modeling of the rotational autofrettage of a thick-walled cylinder based on the generalized plane strain assumption has been presented in part I of the paper. In order to access the potentiality of the ...
Feasibility Study of Thermal Autofrettage of Thick Walled Cylinders
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thickwalled cylinders such as gun barrels, high pressure containers, and rocket shells are designed to withstand high pressure. The cylinder material may crack if the induced pressure exceeds the material yield strength. ...
Generalized Plane Strain Study of Rotational Autofrettage of Thick-Walled Cylinders—Part I: Theoretical Analysis
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: In recent years, a few new methods of achieving autofrettage in thick-walled hollow cylinders have been developed. Rotational autofrettage is one of the new methods proposed recently for prestressing thick-walled cylinders. ...
A Study on Enhancing the Performance of Thermally Autofrettaged Cylinder Through Shrink-Fitting
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thick-walled cylinders are subjected to autofrettage process to increase their pressure carrying capacity and fatigue lifetime. The thermal autofrettage process is a potential process that can generate beneficial compressive ...
The Use of an Equivalent Temperature Field to Emulate an Induced Residual Stress Field in a Rotating Disk Due to Full or Partial Rotational Autofrettage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The evaluation of equivalent temperature fields for cylindrical and spherical pressure vessels to imitate autofrettage-induced residual stresses has been successfully implemented in studying crack growth in autofrettaged ...
Performance Enhancement of a Hole in a Plate Through Residual Stress Induced by Thermal Autofrettage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article presents an investigation of the reinforcement of lughole structures, particularly a hole in an infinite (very large) plate widely employed across aerospace, automobile, and marine industries. The study focuses ...
Application of an Equivalent Temperature Field for Emulating Thermal Autofrettage-Induced Residual Stresses in Thick-Walled Cylinder
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The equivalent temperature field of residual stresses induced by autofrettage of thick-walled cylinders and spheres have been successfully implemented in a finite element method framework to study the crack growth in ...