Energy Equipment and Systems

Energy Equipment and Systems

Stiffness method for pipeline analysis

Document Type : Technical Note

Author
Jalil Jamali
Mechanical Engineering Department, Shoushtar University, Shoushtar, Iran
10.22059/ees.2023.2009954.1442
Abstract
Pipeline systems under thermal loads are frequently used in different industries, such as the power plants and petrochemicals. Unlike the analytical method of elastic center, which is capable to analyze only one branch of pipeline with pipe members parallel to the coordinate system, the method of stiffness removes these limitations. In this article the stiffness method is introduced for the analysis of pipeline systems. Based on this method, the piping system may include any number of piping braches. The straight pipe elements in the branch may have any general orientation and the bend elements may have any arbitrary angle. The computer program designed based on this method may compute the nodal displacements at the ends of the straight or bend elements and present three components for loads and three components for moments. Once the free-body diagram of each piping elements with nodal forces and moments are drawn, then the engineering codes are employed to design the piping system for safe operation.
Keywords
Pipeline Analysis
Stiffness Method
Finite Element Method
FEM
Thermal Loads

Subjects

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Energy Equipment and Systems
Volume 12, Issue 3 - Serial Number 3
Summer 2024
Pages 263-269