Abstract: There is a numerical procedure for modeling autofrettage of thick-walled cylinders that incorporates the Bauschinger effect as a function of prior plastic strain and Von Mises’ yield criterion. ...

Abstract: The geometry analyzed consists of a thick-walled cylinder having a small-diameter evacuator hole penetrating radially through the wall. The loading involves pressure acting on the i.d. of the ...

Abstract: A fracture mechanics-based fatigue life analysis was developed for overstrained, pressurized thick-wall cylinders with one or several semi-elliptical-shaped axial grooves at the inner diameter. The ...

Abstract: Autofrettage is used to introduce advantageous residual stresses into pressure vessels and to enhance their fatigue lifetimes. The Bauschinger effect serves to reduce the yield strength in ...

Abstract: The autofrettage process of a thick walled pressure vessel involves applying tensile plastic strain at the bore of the vessel, which reverses during unloading and results in favorable compressive ...

Abstract: HB7, an ultra-clean, high strength pressure vessel steel manufactured in France, is compared to A723 steel. This steel, suggested as an improved pressure vessel material is currently being ...

Abstract: Investigation of environmental cracking of a 1100-MPa yield strength A723 steel cannon tube subjected to prototype firings is described. Metallographic results show cracking of the steel beneath ...

Abstract: A hybrid method is presented which permits calculation of residual stresses in a swage autofrettaged tube including Bauschinger effect. The results are generally supported by three types of ...

Abstract: Sections of cannon tubes with inner radius of 53, 60, and 78 mm were cycled from near zero to 100–300 MPa internal pressure until fatigue failure occurred. The failure locations were along ...