Calculation of Discontinuity Stresses

Discontinuity stresses can be evaluated using the general bending theory of thin cylindrical shells. Since this method uses edge forces and moments as unknown quantities, it is called the Force Method.

The Kalnin’s computer program, “Stress Analysis of Thin Elastic Shells of Revolution,” can be used to calculate all the stresses due to pressure, discontinuities, and thermal loads. This program uses the Force Method to determine discontinuity stresses. The vessel is divided into simple shell elements, then the edge forces and moments, or the elastic deformations for the matching edges of adjoining elements, are balanced in order to solve the problem.

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