J1010101 Study of Structure of Pressure Tank made of Cast Metal shielded with Synthetic Fiber and Resin

Abstract

A pressure tank is widely used in many equipment of the social infrastructure. We have been developing the protective cover for the metal pressure tank in order to enhance the safety of it. The cover is made of synthetic fiber and resin. The fracture analysis of the tank failure process has been carried out using the finite-element method under the different thickness of the cover and the surface condition. The physical properties of the cast metal and the cover are determined by measured data from the tensile tests with attention to their variation. The simulation result shows that the tank bursts in form of the brittle failure when an internal pressure reaches the withstanding pressure of it. Furthermore it shows that fragments fly outside the tank and that the protective cover catches the fragments. We confirmed that the cover with thickness in more than 2 [P.U.] has the effect of the prevention of scattering the fragments of the pressure tank.