ABSTRACT

This chapter presents a detailed theoretical analysis of the rotational autofrettage process based on the available literature. It explains the plane–stress model of Kamal applicable for thin disks. The chapter provides the plane –strain model of H. R. Zare and H. Darijani, which is suitable for long cylinders. The chapter provides a feasibility study on carrying out the rotational autofrettage operation in practice for the typical SS304 disk and cylinder. In rotational autofrettage, the beneficial residual stresses are generated in the vicinity of the inner wall of a circular disk or cylinder due to the loading and unloading of a centrifugal force. In order to study the physics of the rotational autofrettage for a hollow circular disk, the plane–stress condition is appropriate. In the case of rotational autofrettage, the disk is loaded with a centrifugal force by subjecting it to an angular velocity to cause plastic deformation.