Фізико-математичні основи розрахунку взаємодії муфт і труб у з’єднаннях нафтогазового сортаменту

Abstract

In the threaded connection of a pipe and coupling with the sealing box there occures a complicated set of strain and power characteristics of elastic interaction of sections. The moment theory of rotational shells with the linear variable wall thickness was used to calculate this and the general expression of contact pressure was discovered for the first time. To determine the parameters there have been formulated physical and mathematical principles of equilibrium of edge cross-sections of adjoining sections, equilibrium of contact pressures, balance of strains and tightness on contact sections. It allows to calculate these parameters (radial shifts, slopes, bending moments, transverse forces) of the elastic-strained state for walls of all connection sections under the influence of internal and external pressures.