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Flexibility Analysis of Piping Systems With Discontinuities in Displacement

[+] Author Affiliations
Birendra N. Choudhury

WorleyParsons Edmonton Operation, Edmonton, AB, Canada

Paper No. PVP2016-63066, pp. V003T03A012; 9 pages
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5039-8
  • Copyright © 2016 by ASME


The class of piping flexibility analysis problems discussed in this paper arises when a new piping system at ambient temperature is connected to a piping system that is in operation. At the time of tie-in, the new piping has no thermal expansion and no elastic deformation. Therefore, displacement at the tie-points in the new piping system is zero. On the other hand, the operating piping systems would have undergone some displacements at this point before the tie-in. So there is a discontinuity in displacement at the tie point. This paper discusses how the equations for piping flexibility analysis can be modified to accurately obtain the redundant restraint forces for such cases and their use with current stress analysis programs for some piping configurations.

Copyright © 2016 by ASME



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