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Fabrication Uncertainty in B-2 for Nuclear Pipe Bends Subjected to In-Plane Opening Moment

DSpace at IIT Bombay

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Title Fabrication Uncertainty in B-2 for Nuclear Pipe Bends Subjected to In-Plane Opening Moment
 
Creator ROY, P
GHOSH, S
 
Subject nuclear pipe bends
stress index B-2
Monte Carlo simulation
in-plane opening moment
probabilistic characterization
ELBOWS
 
Description For reliability-based design of pipe bends and elbows, a probabilistic characterization of the primary stress indices (B-1 and B-2) is essential. This paper aims at the characterization of the fabrication/geometric uncertainty in B-2, for thin stainless steel long radius pipe bends, subjected to in-plane opening moment. This characterization is performed in a framework based on Monte Carlo simulation and nonlinear finite element analysis. A revision of the code-based expression for B-2 is proposed where a random variable K replaces the constant numerator in this expression. The statistics for K are provided for different pipe nominal dimensions, which indicates that the existing provision gives a very conservative estimate of the plastic collapse moment for pipe bends subjected to in-plane opening flexure. [DOI: 10.1115/1.4007470]
 
Publisher ASME
 
Date 2014-10-15T10:54:04Z
2014-10-15T10:54:04Z
2013
 
Type Article
 
Identifier JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 135(1)
http://dx.doi.org/10.1115/1.4007470
http://dspace.library.iitb.ac.in/jspui/handle/100/14796
 
Language en