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Three Dimensional Aspects of Computational Weld Modelling

[+] Author Affiliations
Frederick W. Brust, David L. Rudland

Engineering Mechanics Corporation of Columbus (EMC2 ), Columbus, OH

Paper No. PVP2008-61558, pp. 549-564; 16 pages
  • ASME 2008 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Chicago, Illinois, USA, July 27–31, 2008
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4829-6
  • Copyright © 2008 by ASME


Many computational weld models and the corresponding solutions are performed using two dimensional models. For instance, many models of circumferential pipe welding use the axis-symmetric assumption since the predicted residual stresses tend to be upper bound. Hence, when performing a stress corrosion crack growth prediction the results tend to be conservative. However, there are many instances where full three dimensional analyses are required. Distortion predictions of large structures require full three dimensional analyses. Pipe repair analyses often require 3D solutions since the repair may only be 90-degrees of the circumference. Many other examples exist. This paper discusses circumstances where such three dimensional solutions are required. Moreover, discussions of when full moving arc solutions versus lump pass solutions suffice, and many other 3D analysis assumptions are summarized. Several examples of full three dimensional analyses are discussed. These include a partial circumferential pipe repair, an industrial weld fabrication, and ship structure weld analyses.

Copyright © 2008 by ASME



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