ABSTRACT
Hydraulic autofrettage is the most widely practiced autofrettage process. Three common aspects are important in the modeling of hydraulic autofrettage processes: yield criterion, incorporation of the material behavior for subsequent plastic deformation, and boundary conditions. This chapter presents a detailed description of the hydraulic autofrettage process in a thick-walled cylinder and sphere. It also presents a solution for the elastic analysis of an internally pressurized thick-walled cylinder with various end conditions. The chapter explains closed-form models of a hydraulically autofrettaged cylinder based on the Tresca and von Mises yield criterion. It explores the closed-form model for the elastic analysis of an internally pressurized thick-walled sphere. The chapter provides a closed-form model for a hydraulically autofrettaged thick-walled sphere. The results show that the material of the autofrettage specimen is high strength, low alloy steel 4333 M4, having Young’s modulus 207 GPa, and yield strength 1070 MPa.
