Numerical study of secondary effects in flexibility analysis of an ell-shaped piping structure

This thesis considers the influence of four secondary effects on the analysis of a simple elle-shaped piping structure when it is uniformly heated. The four effects are: (a) axial deformation, (b) shearing deformation, (c) beam-column effect, and (d) difference between arc and chord. They are usually neglected in a piping flexibility analysis. In a paper of several years ago, J. E. Brock developed a theory for this investigation but did not present any numerical results or conclusions. The present thesis reviews Brock's theory and corrects some errors in coefficients. It then describes a digital computer program for IBM System 360 which performs the corresponding caluclations. Finally, it draws the new and quite significant conclusion that conventional piping stress analysis, which neglects these secondary effects, can result in gross errors in evaluating stresses in piping configurations which are likely to be encountered in piping practice

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Monterey, California. U.S. Naval Postgraduate School

Year dc:date.issued

1967

Author dc:creator

• Miles, John Henry Thomas

Advisor dc:contributor.advisor

• Brock, John E.

Statement dc:rights

• This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.

Language dc:language.iso

en_US

Handle dc:identifier.uri

https://hdl.handle.net/10945/12750

OAI identifier oai:identifier

oai:calhoun.nps.edu:10945/12750