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Daniel V. Sommerville
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Proceedings Papers

Effects of Multiple Co-Linear Flaws on Crack Opening Area

Stephen M. Parker, Matthew C. Walter, Daniel V. Sommerville
Proc. ASME. PVP2016, Volume 3: Design and Analysis, V003T03A043, July 17–21, 2016
Paper No: PVP2016-63689
DOI: https://doi.org/10.1115/PVP2016-63689
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Topics: Fracture (Materials), Cracking (Materials), Fracture (Process), Boiling water reactors, Finite element analysis, Leakage, Fracture mechanics, Inspection, Nuclear industry, Nuclear power stations
Proceedings Papers

3-Dimensional Finite Element T-Stress Calculation for Reactor Pressure Vessel Nozzle Blend Radius Semi-Elliptical Surface Cracks

Minghao Qin, Shu Tang, Francis Ku, Daniel V. Sommerville, Hal Gustin
Proc. ASME. PVP2015, Volume 2: Computer Technology and Bolted Joints, V002T02A006, July 19–23, 2015
Paper No: PVP2015-45693
DOI: https://doi.org/10.1115/PVP2015-45693
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Topics: Finite element analysis, Nozzles, Reactor vessels, Stress, Surface cracks, Fracture (Materials), Plane strain, Engineering systems and industry applications, Fracture mechanics, Nuclear industry
Proceedings Papers

Treatment of Stresses Exceeding Material Yield Strength in ASME Code Section XI Appendix G Fracture Toughness Evaluations

Hardayal S. Mehta, Gary L. Stevens, Daniel V. Sommerville, Michael Benson, Mark Kirk, Timothy J. Griesbach, Joshua Kusnick
Proc. ASME. PVP2014, Volume 1: Codes and Standards, V001T01A014, July 20–24, 2014
Paper No: PVP2014-28397
DOI: https://doi.org/10.1115/PVP2014-28397
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Topics: ASME Standards, Fracture toughness, Stress, Yield strength, Pressure, Temperature, Yield stress, Failure, Fracture mechanics, Thermal stresses
Proceedings Papers

CFD Analyses of BWR Steam Plenum to Investigate a Possible Cause for Steam Dryer Outer Hood Visual Examination Anomalies

Sandra Sowah, Daniel V. Sommerville, Benoit P. Belley
Proc. ASME. PVP2011, Volume 3: Design and Analysis, 43-49, July 17–21, 2011
Paper No: PVP2011-57650
DOI: https://doi.org/10.1115/PVP2011-57650
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Topics: Boiling water reactors, Computational fluid dynamics, Steam, Vortices, Dryers, Engineering simulation, Nozzles, Simulation, Vessels, Domes (Structural elements)
Proceedings Papers

Additional Improvements to Appendix G of ASME Section XI Code for Nozzles

Hardayal S. Mehta, Timothy J. Griesbach, Daniel V. Sommerville, Gary L. Stevens
Proc. ASME. PVP2011, Volume 1: Codes and Standards, 973-984, July 17–21, 2011
Paper No: PVP2011-57015
DOI: https://doi.org/10.1115/PVP2011-57015
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Topics: Nozzles, Corners (Structural elements), Pressure, Stress, Temperature, ASME Standards, Fluence (Radiation measurement), Reactor vessels, Temperature gradient, Welding research
Proceedings Papers

Nozzle Blend Radius Peak Stress Correction Factors for 2-D Axisymmetric Finite Element Models

Matthew C. Walter, Daniel V. Sommerville
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 3, 317-325, July 18–22, 2010
Paper No: PVP2010-25104
DOI: https://doi.org/10.1115/PVP2010-25104
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Topics: Finite element model, Nozzles, Stress, Boiling water reactors, Feedwater, Hoop stress, Sprays, Dimensions, Geometry, Modeling
Proceedings Papers

Benchmark of an Application of Acoustic FEA for Light Water Reactor Loss of Coolant Accident Acoustic Loads

Daniel V. Sommerville
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 4, 351-359, July 18–22, 2010
Paper No: PVP2010-25865
DOI: https://doi.org/10.1115/PVP2010-25865
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Topics: Accidents, Acoustics, Coolants, Finite element analysis, Light water reactors, Sound pressure, Boiling water reactors, Stress, Computer software, Design
Proceedings Papers

Boiling Water Reactor Jet Pump Acoustic Loads Resulting From a Recirculation Outlet Line Break Loss of Coolant Accident: Some Sensitivity Studies

Daniel V. Sommerville, Raju Ananth
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 4, 361-373, July 18–22, 2010
Paper No: PVP2010-25866
DOI: https://doi.org/10.1115/PVP2010-25866
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Topics: Accidents, Boiling water reactors, Coolants, Jet pumps, Sound pressure, Annulus, Acoustics, Stress, Design, Finite element analysis
Proceedings Papers

In-Service Inspection Strategy for Alloy X-750 BWR Jet Pump Beams Based Upon Linear Elastic Fracture Mechanics Analysis

Daniel V. Sommerville, Hardayal Mehta, Robert Carter, Jonathon Kubiak
Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 1049-1061, July 26–30, 2009
Paper No: PVP2009-77131
DOI: https://doi.org/10.1115/PVP2009-77131
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Topics: Alloys, Boiling water reactors, Fracture mechanics, In-service inspection, Jet pumps, Inspection, Annulus, Cracking (Materials), Design, Failure
Proceedings Papers

Alternate Design Formulae for a Full Structural Weld Overlay Repair

Daniel V. Sommerville
Proc. ASME. PVP2005, Volume 6: Materials and Fabrication, 625-629, July 17–21, 2005
Paper No: PVP2005-71549
DOI: https://doi.org/10.1115/PVP2005-71549
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Topics: Collapse, Design, Maintenance, Overlays (Materials engineering), Stress, Geometry
Proceedings Papers

Scaling Laws for Model Test Based BWR Steam Dryer Fluctuating Load Definitions

Daniel V. Sommerville
Proc. ASME. PVP2006-ICPVT-11, Volume 4: Fluid Structure Interaction, Parts A and B, 1599-1612, July 23–27, 2006
Paper No: PVP2006-ICPVT-11-93703
DOI: https://doi.org/10.1115/PVP2006-ICPVT-11-93703
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Topics: Boiling water reactors, Scaling laws (Mathematical physics), Steam, Stress, Cracking (Materials), Fracture (Process), Acoustics, Dryers, Excitation, Failure