NDLI: Statistical Evaluation of Stress Independence of Two Connected Structures

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Christopher, R. Johnson Mann, J. Adin Gregory, D. Westwater
Copyright Year	2017
Abstract	In ASME B16.34, features included in a control valve geometry that allows connection to standard flanges, referred to as “flange like features”, need to be evaluated as part of the valve design analysis. An analysis approach is presented that evaluates if the stress in the region of the flange like feature is independent of the core control valve structure. When determined to be independent, then the flange like feature can be designed by rule using ASME B16.5. The approach evaluates the stress around the flange like feature with the flange at the designed location and then at an increased distance from the core control valve structure. Because the two geometries result in two different finite element analysis (FEA) meshes, a statistical approach was developed to evaluate how much the linearized stress behind the flange changes between the two different geometries. The result is a procedure and criteria to determine if the flange like feature can be designed by rule or further stress analysis is needed.
Sponsorship	Pressure Vessels and Piping Division
File Format	PDF
ISBN	9780791857953
DOI	10.1115/PVP2017-65846
Volume Number	Volume 3B: Design and Analysis
Conference Proceedings	ASME 2017 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2017-07-16
Publisher Place	Waikoloa, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Design Geometry Stress analysis (engineering) Flanges Valves Finite element analysis Stress
Content Type	Text
Resource Type	Article

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