TRANSIENT ELECTROMAGNETIC MONITORING OF THE CRYOLITHOZONE WITH INDUCTION COILS AND A CURRENT LINE: COMPARATIVE STUDY

Russian Geology and Geophysics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Language: Английский

Oscillations of the Oil Pipeline Axis with Consideration of the Inertia Component When Pumping Diesel Fuel

Energies, Journal Year: 2025, Volume and Issue: 18(10), P. 2472 - 2472

Published: May 12, 2025

This study examines a single-span beam crossing without longitudinal deformation compensators during diesel fuel pumping. In addition to static forces, namely, the weight of pipeline and transported product, analysis considers vertical components inertial forces acting on oil product itself. These are directed perpendicularly abscissa axis connecting endpoints crossing. The effects cause significant oscillations pipeline, which have not been sufficiently addressed in previous research. work aims these determine displacements points along axis, magnitudes resulting bending moments at A classical Fourier series method is applied solve formulated boundary value problem. results show that occur plane, symmetrical relative center span, undamped. maximum displacement reaches approximately 57 mm midpoint crossing, oscillation period around 0.415 s. Inertial force distribution also symmetric about center. detailed with small time steps confirmed strictly periodic, exhibiting equal upward downward directions. highlight fatigue loads arise operation such crossings, important for assessing strength stability structures under real operating conditions.

Language: Английский

A Nonlinear Analytical Method for Pipeline Strain Under Soil Thaw Subsidence Load in Permafrost Region

Published: Jan. 1, 2024

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Language: Английский