Elasto-Plastic Analysis of Constrained Disk Burst Tests

Abstract

The PVRC Subcommittee on Effective Utilization of Yield Strength has conducted an extensive series of pressurized burst tests on constrained disk specimens of seven steels. Elasto-plastic analyses have been performed for nine of these tests and the results are presented in this report. Good agreement between the analytical and experimental results all the way to failure pressure is illustrated by a comparison of centerline deflections. Interpretation of the analytical data indicates that both edge type and centerline type of failures are correlated reasonably well by the conventional reduction in area from a uniaxial tensile test once triaxiality is accounted for.