the number of bolts needed in each hemispherical shell if the normal stress in the bolts should not exceed 250 MPa b. the minimum required thickness of the hemispherical shells if the normal stress in the shell should not exceed 125 MPa c. the hoop stress in the cylinder
The gas storage tank is fabricated in the following manner: a 10-mm thick plate is rolled to form a cylindrical shell which is bolted on one side, then its ends are sealed by bolting two hemispherical shells. The resulting inner diameter of the tank is 4 m. All bolts have a diameter of 15 mm. If the internal pressure in the tank is 1 MPa, determine the following:
a. the number of bolts needed in each hemispherical shell if the normal stress in the bolts should not exceed 250 MPa
b. the minimum required thickness of the hemispherical shells if the normal stress in the shell should not exceed 125 MPa
c. the hoop stress in the cylinder
d. the minimum require spacing of the bolts in the cylindrical shell if the normal stress in the bolts should not exceed 250 MPa.
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