ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In the ASME Code Section III ‘design by analysis’ approach, stresses are determined bynumerical method and compared with corresponding stress limits. This approach provides severalstress criteria for fatigue life assessment and procedures for categorizing the representative stresscomponents. Since the stress criteria were derived from two-dimensional basis, however, it mayinappropriate to delineate structural components with complex geometry. In this paper, detailedtransient analyses are performed for modular pressurizer with an asymmetric geometry, whichincludes perforated parts to mount various piping and equipments. Also, the applicability of aneffective elastic modulus to consider the perforation and the appropriateness of stress linearizationmethod using stress classification line are assessed. Then, the cumulative usage factor as well as stressintensities at critical locations of the pressurizer are calculated and compared with correspondingallowable design stress limits. The key findings of this work can be used to make regulatory guides forevaluation and confirmation of structural intensity of components with asymmetric perforated parts
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.139.pdf
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