Transcript Project Status Report 3.pptx

Chris Wowk
MANE 6970
Master’s Project
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All Analyses Completed
Technical Content Sections Populated
Comments Incorporated
To Go
 Finalize Appendices
 Abstract
 Acknowledgements
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Waters and Schneider’s
(1969) method for
analyzing cover
plate/flange joints
extended to determine
flange separation
Solid Element Model
Shell/Beam Element Model
4"
NPS Size
Analysis
Method
Cover Thickness
Bolt Pre-Stress
Joint
Separation
Along Length
Radial Beam Theory
Solid Element FEA
Shell Element FEA
Radial Beam Theory
Radial
Location of
Contact
Appendix Y Equations
Solid Element FEA
Shell Element FEA
Radial Beam Theory
Stress In
Center of
Cover
Appendix Y Equations
Solid Element FEA
Shell Element FEA
Maximum
Joint
Separation
Radial Beam Theory
Solid Element FEA
Shell Element FEA
t1
0
Pressure
Load
16"
0.5*t1
25%
Yield
80%
Yield
0
Pressure
Load
25%
Yield
2*t1
80%
Yield
0
Pressure
Load
t2
25%
Yield
80%
Yield
0
Pressure
Load
25%
Yield
80%
Yield
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Shell/Beam FEA predicts much
lower joint separations (all cases)
Joint Separation decreases as cover
thickness increases
Greater separation for larger size
flange at low preloads. Approaches
similar limit as smaller joint as
preload increases
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Great agreement between
analysis methods for 4 NPS
joint
Contact location cannot be
normalized to compare
different sized joints
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RBT and Appendix Y
equations appear to
approach a limit
FEA solutions show
increase at high
preloads
Stress decreases as
cover thicknesses
increases
 FINISH
– ASAP!!
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ASME Boiler and Pressure Vessel Code, Section VIII – Rules for
Construction of Pressure Vessels, 2013 Edition, Appendix Y.
Galai, H and Bouzid, A.H, “Analytical Modeling of Flat Face
Flanges with Metal-to-Metal Contact Beyond the Bolt Circle,”
Journal of Pressure Vessel Technology, Vol 132, 2010.
Schneider, R.W, “Flat Face Flanges with Metal-to-Metal
Contact Beyond the Bolt Circle,” Transactions of the ASME, Vol
90, 1968, pgs 82-88.
Waters, E.O and Schneider, R.W, “Axisymmetric, Nonidentical,
Flat Face Flanges with Metal-to-Metal Contact Beyond the
Bolt Circle,” Journal of Engineering for Industry, Vol 91, 1969,
pgs 615-622.