Stress Analysis of a 4-Inch Diameter Pressure Vessel During a 1:1 Biaxial Burst Test

摘要

The investigation was made to determine the variation of stress ratio in the test section of a 4-inch diameter pressure vessel. A 1:1 biaxial test was conducted by applying a combination of pressure and axial load at an essentially constant ratio to the test cylinder until failure. The stress ratio was determined at each of twenty-one locations from measured principal strains. The maximum variation in yield strength at any of the nine centermost locations in the test section was less than plus or minus 1.5 percent of their average. This specimen configuration is considered acceptable for 1:1 biaxial tests, provided that the thinnest area of the specimen is located close to the axial center-line of the test section. (Author)