Application of the FEM for studying the dynamic stability of a pipe constructed from segments of different rigidity

Pipeline transportation is efficient for conveying fluids over long distances. Its main advantages include the continuity of transportation, the ability to transport large quantities of fluids, low energy consumption, and significant environmental benefits. However, potential pipeline damage can lead to significant negative consequences for the economy, the environment, and pose risks to public health and safety. This is why issues related to the stability of fluid-carrying pipes have been the focus of numerous scientific studies. The current paper examines the dynamic stability of a fluid-carrying pipe constructed from two segments with different rigidity. The Finite Element Method (FEM) was used to solve the problem. The results obtained demonstrate how the ratio of lengths of the two segments affects the stability of the system.