REFERENCE:Riley, William F. (William Franklin), 1925 - Mechanics of materials / William F. Riley, Leroy D. Sturges, Don H. Morris. — 5th ed.

Problems involving thin-walled vessels subjected to liquid (or gas) pressure p are readily solved with the aid of free-body diagrams of sections of the vessels together with the fluid con-tained therein. In the following subsections, spherical, cylindrical , and other thin shells of revolu-tion are considered.

* Spherical Pressure Vessels & * Cylindrical Pressure Vessels = used for gas storage* Thin Shells of Revolution = extended to include other shapes and other loading condition.

Example Problem 5-16A cylindrical pressure vessel with an inside diameter of 1.50 m is constructed by wrapping a 15-mm thick steel plate into a spiral and butt-welding the mating edges of the plate, as shown in Fig 5-36a. The butt-welded seams form an angle of 30 degree with a transverse plane through the cylin-der. Determine the normal stress perpendicular to the weld and the shearing stress parallel to the weld when the internal

pres-sure in the vessel

is 1500 kPa.

Example Problem 5-17The cylindrical pressure tank shown in Fig. 5-37a has an inside diameter of 4 ft and a wall thick-ness of 3/4 in. The pressure in the tank is 400 psi. An additional axial load of 30,000 lb is applied to the top end of the tank through a rigid bearing plate. Determine the stresses ox,oy and Txy on a stress element at point A, which is on the outside surface of the tank.