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Accession Number:
AD0835514
Title:
LOW CYCLE FATIGUE STRENGTH OF THICK-WALLED PRESSURE VESSELS.
Corporate Author:
WATERVLIET ARSENAL NY BENET WEAPONS LAB
Report Date:
1968-06-01
Abstract:
Pressure vessel design is generally based upon elastic strength. However, if a vessel is exposed to repeated pressure application, a point may eventually be reached where fatigue failure occurs even though the elastic strength has not been exceeded. In this work, the fatigue life characteristics of large high strength cylinders in the cycles to failure range of 1,000 - 10,000 has been investigated. The effects of autofrettage, the presence of rifling, excessive overstrain, and chromium plating of the bore upon fatigue life have been investigated. It is shown that autofrettage substantially increases fatigue life whereas the presence of rifling, chromium plating and excessive overstrain decrease life by varied amounts. Various means of interpreting the thick-walled cylinder fatigue results are evaluated and discussed. It is shown that the best correlation is obtained based on maximum bore hoop stress. Author
Descriptive Note:
Technical rept.,
Pages:
0044
File Size:
0.00MB
