Photoelastic Study of the Stresses near Openings in Pressure Vessels;Photoelastic Determination of the Stresses in Reinforced Openings in Pressure Vessels;Preliminary Evaluation of PVRC Photoelastic Test Data on Reinforced Openings in Pressure Vessels

摘要

Beginning approximately ten years ago, the PVRC Subcommittee on Reinforced Openings undertook a program aimed at the development of a theory for the reinforcement of openings in pres¬sure vessels and piping under internal pressure. Inasmuch as development of fully analytical methods for calculation of stresses seemed highly problematic at that time, a rather broad scale experimental program was undertaken covering a more or less systematic examination of the prin¬cipal variables involved in the problem, such as d/D, D/T, and s/S ratios, form of reinforcement, percentage of reinforcement, "length" of rein¬forcement, and special purpose nozzle configura¬tions.