An Analysis of Stiffness Matrices of Tube Elements to Assess the Correctness of Modeling Curved Elements of Pipeline Systems
| Authors: Shelofast V.V., Shelofast V.V. | Published: 30.05.2020 |
| Published in issue: #5(722)/2020 | |
| Category: Mechanical Engineering and Machine Science | Chapter: Machine Science | |
| Keywords: stiffness matrix, ductility matrix, nodal load vector, shape functions, nodal displacements, normal stresses |
Large-scale work to create a Russian engineering analysis system involves the implementation of a considerable number of specialized tasks, each of which requires an individual approach and specific solutions. The calculation of pipeline systems that can most easily be performed in the version using rods is no exception. Such an approach is the most effective in terms of increasing the speed of calculations, increasing the dimension of the tasks performed, and most importantly, in simplifying the modeling procedure. In this paper, the authors consider the option of determining the stiffness matrices of a spatial element for modeling of pipes, which underlie the full engineering analysis of pipeline systems. Verification examples that confirm the reliability and correctness of the obtained solutions are presented.
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