STRESS ANALYSIS

SYSTEM MODELLING

The stress analysis of a piping system is performed by use of Finite Element method. This is based on dividing the system into many elements connected at nodal points.
The elements used for the analysis is a beam element, which has 2 end nodes and 6 degrees of freedom at each node; 3 translation in X,Y and Z-global axes and 3 rotation about these 3 global axes. The pipe element has the added capability of application of internal pressure. A curved pipe element is modified to have flexibility factor and is used for elbow. The elbow / bend is usually represented by 2 or more elements.
For each element the element stiffness matrix is a relationship between the forces applied at the elements nodes and the displacements at those nodes
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