Verification of an Elastic Procedure to Estimate Elastic Follow-Up

[+] Author and Article Information
A. K. Dhalla

Westinghouse Electric Corporation, Advanced Energy Systems Division, Madison, Pa. 15663

J. Pressure Vessel Technol 108(4), 461-469 (Nov 01, 1986) (9 pages) doi:10.1115/1.3264813 History: Received April 17, 1985; Revised December 04, 1985; Online November 05, 2009


This paper presents a simplified elastic procedure to estimate the amount of elastic follow-up due to thermal expansion stress experienced by a large diameter (greater than 200 mm) thin-walled (d /t greater than 30) piping system. The simplified method utilizes the concept of reduced elastic modulus which was successfully applied to classify clamp-induced pipe stresses into primary and secondary categories. The conservatism of the simplified method in quantifying elastic follow-up is illustrated in this paper by comparing the numerical estimate of elastic follow-up with that obtained from a detailed creep analysis of a Liquid Metal Fast Breeder Reactor piping system.

Copyright © 1986 by ASME
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