Fracture of pressurized metal and graphite/epoxy cylinders for applications to pressure vessel design

摘要

In this paper, a fracture criterion is discussed for the design against fracture in pressurized cylindrical vessels. The design criterion incorporates correction factors to account for the geometry of the cylinders, the thickness andthe plastic deformation (a la Dugdale). The criterion may now be used to predict catastrophic failures in pressurized metal cylinders by knowing only material properties. Moreover, a correlation function is shown to exist between a plate and acylinder. This correlation function may now be used to predict failures in cylindrical vessels from experimental data performed on flat plates of same material. Comparison of experimental data on pressurized cylinders made of metal as well as ofgraphite/epoxy is very good.