As a continuation of the computation of the stresses from local loads in a spherical vessel with a rigid cylindrical insert, the more realistic case of a spherical vessel with an inserted tube is investigated for the case that the tube is subjected to a radial load. As shown by the graphs the maximum deflection is considerably increased by the fact that the insert is now flexible, which flexibility is mainly determined by the ratio of the thickness of the spherical shell and the thickness of the tube. The maximum radial bending moment is greatly decreased by the flexibility of the pipe, whereas the tangential bending moment increases to maximum values that may be somewhat higher than the maximum value of the radial moment for a rigid insert. However, if the ratio of the spherical shell thickness to tube thickness is smaller than about 3, the maximum value of the tangential moment does not become larger than the maximum radial moment for the case of it rigid insert. The maximum membrane forces may become higher than those for it rigid insert.
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| Number of Pages : | 79 |
| Published : | 1959 |
