NDLI: Finite Element Analysis and Stress Intensification Factor Determination for Core to Jacket Joints

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Mohammadi-Araz, Pishdad
Copyright Year	2009
Abstract	In this study Stress Intensification Factor (“SIF”) and stress analysis for core to jacket joints are investigated. The three-dimensional finite element shell model consists of two shells: the jacket and the core. The effect of the welded joint discontinuity is taken into account by applying a stress concentration factor. It is presumed that the core and shell are ASTM A-106 GR B [1]. The joint is modeled for different pipe-outside diameters and wall-thicknesses and SIF is calculated for different Head shapes, which are discussed further in this paper. The model is examined with different mesh types and the results are discussed. Temperature gradient in pipe wall-thickness causes thermal stress. The thermal stress, combined with operating, sustained and differential expansion stress are considered in the stress analysis of core and jacket shell. The results for different temperature gradients are compared. The imposed displacement loads caused by global temperature difference between core and the jacket are taken from a beam model run of a typical discontinuous steam jacketed piping system.
Sponsorship	Pressure Vessels and Piping
Starting Page	191
Ending Page	200
Page Count	10
File Format	PDF
ISBN	9780791843666
DOI	10.1115/PVP2009-78007
e-ISBN	9780791838549
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2009 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2009-07-26
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Stress concentration Temperature Stress analysis (engineering) Shells Wall thickness Stress Displacement Piping systems Temperature gradient Astm international Welded joints Steam Finite element analysis Shapes Pipes Thermal stresses
Content Type	Text
Resource Type	Article

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