Finite element analysis of piping-nozzle connections. Part I. Spring constants

Document Type

Conference Proceeding

Publication Date

1-1-1990

Abstract

This paper presents a comprehensive study of spring constants of piping at the nozzle connection by the finite element method (FEM). Three types of spring constant coefficients are studied: the coefficients in the radial direction and rotational coefficients in the circumferential and longitudinal directions. This problem was previously reported by Murad & Sun, and Sun & Sun. They adopted Bijlaard's double Fourier series solutions of displacement for the response to a distributed square load on the surface of a closed cylinder to simulate the nozzle-to-pipe connection. Due to the convergence problem, in all the previous work, the beta value (nozzle radius/pipe radius) has ranged only up to 0.55. In this paper, using ANSYS FEM code, we extend the range of beta from 0.1 to 0.9. Gamma (pipe radius/pipe thickness) is taken from 5 to 200, and alpha (pipe length/pipe radius) equals 8 to minimize the effect of the pipe end conditions in our solutions.

Identifier

0025109225 (Scopus)

Publication Title

American Society of Mechanical Engineers Pressure Vessels and Piping Division Publication PVP

ISSN

0277027X

First Page

49

Last Page

55

Volume

194

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