This paper describes a numerical analysis of the swaging autofrettage of a gun barrel by forcing an oversize mandrel (or “swage”) through the barrel. Analyses are conducted on a two pass swaging procedure in which two separate swages are driven through the barrel. Differences between the maximum swage force required and the resulting barrel deformations and stresses that result from single and two pass swaging are discussed. The effects of changes to swage geometry for single pass swaging are also considered.
Issue Section:
Technical Papers
1.
Parker
, A. P.
, 1981
, “Stress Intensity and Fatigue Crack Growth in Multiple-cracked, Pressurised, Partially Autofrettaged Thick Cylinders
,” Fatigue Fract. Eng. Mater. Struct.
, 4
, pp. 321
–330
.2.
Davidson
, T. E.
, Barton
, C. S.
, Reiner
, A. N.
, and Kendall
, D. P.
, 1962
, “New Approach to the Autofrettage of High Strength Cylinders
,” Exp. Mech.
, 2
, pp. 33
–40
.3.
Clark, G., 1982, “Residual Stresses in Swage-Autofrettaged Thick-Walled Cylinders,” Materials Research Laboratories (Melbourne, Australia), Report MRL-R-847.
4.
Kendall
, D. P.
, 2000
, “A Short History of High Pressure Technology from Bridgman to Division 3
,” ASME J. Pressure Vessel Technol.
, 122
, pp. 229
–233
.5.
O’Hara, G. P., 1992, “Analysis of the Swage Autofrettage Process,” US Army ARDEC TR ARCCB-TR-92016, Benet Labs, Watervliet Arsenal, NY, USA.
6.
Principia Mechanica Ltd. 1985 PR2D—User’s Guide, Version 1C-2, Technical Note No. PR-TN-14.
Copyright © 2003
by ASME
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