Research Papers: Design and Analysis

Residual Stress in an Autofrettaged Tube Taking Bauschinger Effect as a Function of the Prior Plastic Strain

[+] Author and Article Information
Xiaoping Huang

State Key Lab of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China; CeSOS, Department of Marine Technology, NTNU, N-7491 Trondheim, Norway

Torgeir Moan

CeSOS, Department of Marine Technology, NTNU, N-7491 Trondheim, Norway

J. Pressure Vessel Technol 131(2), 021207 (Jan 13, 2009) (7 pages) doi:10.1115/1.3062937 History: Received September 26, 2007; Revised January 22, 2008; Published January 13, 2009

Autofrettage is a practical method for increasing the elastic carrying capacity and the fatigue life of thick-walled cylinders such as cannon and high-pressure tubular reactor. Many analytical and numerical solutions for determining the residual stress distribution in an autofrettaged tube have been reported. It is still difficult to model the Bauchinger effect, which is dependent on the prior plasticity in an analytical solution. The reduced Young’s modulus during unloading affects residual stress distribution. However, until now this effect has not been considered in any analytical model. In this paper, an autofrettage analytical solution considering Young’s modulus and the reverse yield stress dependent on the prior plasticity, based on the actual tensile-compressive curve of the material and the von Mises yield criterion, has been proposed. New model incorporates the Bauschinger effect factor and the unloading modulus variation as a function of prior plastic strain, and hence of the radius. Thereafter it assumes a fixed nonlinear unloading profile. The comparison of predicted residual stress distribution by the present solution with that of fixed unloading curve model, and test results shows that the present solution gives accurate prediction of residual stress distribution of an autofrettaged tube. This analytical procedure for the cylinder permits an excellent representation of various pressure vessel steels.

Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Stress-strain curve of steel A723-1130 (13)

Grahic Jump Location
Figure 2

Engineering stress/strain curve of steel A723-1130

Grahic Jump Location
Figure 4

Radii of elastic plastic zones

Grahic Jump Location
Figure 5

BMR and BSR as a function of prior plasticity

Grahic Jump Location
Figure 6

Bauschinger effect factors vary along the tube wall

Grahic Jump Location
Figure 7

Stress-strain curve of 30CrNiMo8

Grahic Jump Location
Figure 8

Residual stress distribution

Grahic Jump Location
Figure 3

General tensile-compressive curve of material




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In