Elasto-Plastic Deformation of a Pressure Vessel with a Nonradial Branch Pipe and Determination of the Limit Load

Skopinskii, V. N.; Berkov, N. A.; Stolyarova, N. A.

doi:10.3103/s1052618818060109

Cited by 1 publication

(1 citation statement)

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“…Wang H F et al [3] employed the elastic-plastic large deflection analysis method and nonlinear finite element analysis to determine the bursting pressure and fracture location at the intersection of the oblique nozzle and cylindrical shell. Skopinskii et al [4] utilized the finite element inelastic analysis method to investigate the connection structure between the nozzle and shell. The findings reveal that the ultimate load of radial oblique nozzles is significantly lower than that of radial nozzles.…”

Section: Introductionmentioning

confidence: 99%

Strength Analysis of Cylindrical Shells with Tangential Nozzles under Internal Pressure

Zhao,

Qian,

2024

Applied Sciences

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Pressure vessels having the structure of a cylindrical shell with a tangential nozzle are often used in engineering for some process requirements. But there are no accurate methods in engineering codes for the strength design of this special structure. In this paper, the limit–load analysis was performed to evaluate the weakening effects of the tangential nozzles on the strength of the cylindrical shells under internal pressure. A so-called strength–weakening coefficient was defined to reflect the weakening degree of the load-bearing capacity of the cylindrical shells by the tangential nozzles or specifically by the three dimensionless structural parameters, namely diameter ratio (do/Di), diameter-thickness ratio (Di/T) and thickness ratio (t/T). Results show that when increasing do/Di and Di/T or decreasing t/T, the strength–weakening coefficient increases, which means that the strength–weakening effect of the tangential nozzle on the cylindrical shell increases. With sufficient simulation results, regression equations for the strength–weakening coefficient were obtained which provides a reference for the strength design of cylindrical shells with tangential nozzles under internal pressure.

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Section: Introductionmentioning

confidence: 99%