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Application of the Linear Matching Method to the Integrity Assessment for the High Temperature Response of Structures

[+] Author Affiliations
Haofeng Chen, Alan R. S. Ponter

University of Leicester, Leicester, UK

Paper No. PVP2003-1884, pp. 3-12; 10 pages
doi:10.1115/PVP2003-1884
From:
  • ASME 2003 Pressure Vessels and Piping Conference
  • Computer Technology and Applications
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-1699-0
  • Copyright © 2003 by ASME

abstract

The paper describes a first attempt to produce a complete system of calculations that cover the entire range of assessments required in the Life Assessment method R5 based on a new programming method, the Linear Matching Method, and using shakedown and related concepts. We show that two solutions types are possible, the first assuming a constant residual stress field that provides shakedown and related limits. The second method involves the evaluation of the amplitude of the changing residual stress field. This provides the first stage for the ratchet limit and the amplitude of plastic strain. By adaptation the elastic follow-up factor corresponding to creep dwell periods may also be evaluated.

Copyright © 2003 by ASME

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