Speaker
Dr
Martina Scapin
(Politecnico di Torino)
Description
Pressure vessels are leakproof containers. They may be of any shape: they commonly have the form of spheres, cylinders, cones, ellipsoids or some composite of them. A common design is a cylinder with end caps called heads. Vessels or shells are considered to be formed of curve plate in which the thickness is small in comparison with the other dimensions, offering little resistance to bending perpendicular to their surface: they are mainly subjected to a membrane state of stress. The membrane stresses are average stresses over the thickness of the vessel and are considered to act tangent to its surface. Except for limited portions, bending is not necessary to equilibrate the pressure, differently from what happens in case of planar plates.