Numerical analysis of a three-dimensional branched pipeline using special software designed for estimation of the strength of the equipment of nuclear power plants

We describe the structure of an informational model of a branched three-dimensional pipeline, which is important for analysis of the stressed state of its elements, and formulate the basic principles of, its application. For rectilinear and (this is especially important) curvilinear segments of pipeline, we obtain relationships between the generalized displacements and generalized forces at every point of the considered segment. On the basis of these relationships, we formulate a procedure for application of the method of initial parameters to the analysis of the elastic state of the pipeline. This procedure is based on a simple single-stage sequence of passing through the entire pipeline to obtain a closed system of equations for the unknown generalized forces. In agreement with contemporary standards and documents, we develop an algorithm and realize an iteration procedure to take into account the effect of friction in the supports.