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Yasumasa Shoji
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Proceedings Papers

Self-Loosening Behavior of the Nut Due to Tension Change Considering the Inclination of Bearing Surface

Yasumasa Shoji
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T02A008, July 13–15, 2021
Paper No: PVP2021-62497
https://doi.org/10.1115/PVP2021-62497
View Paper titled, Self-Loosening Behavior of the Nut Due to Tension Change Considering the Inclination of Bearing Surface
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Topics: Bearings, Screw threads, Tension, Thread
Proceedings Papers

Effect of Friction Coefficients Regarding Bolt Self-Loosening

Yasumasa Shoji
Proc. ASME. PVP2020, Volume 2: Computer Technology and Bolted Joints, V002T02A027, August 3, 2020
Paper No: PVP2020-21836
https://doi.org/10.1115/PVP2020-21836
View Paper titled, Effect of Friction Coefficients Regarding Bolt Self-Loosening
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Topics: Friction, Thread
Proceedings Papers

The Effectiveness of Non-Loosening Fasteners

Yasumasa Shoji
Proc. ASME. PVP2017, Volume 2: Computer Technology and Bolted Joints, V002T02A022, July 16–20, 2017
Paper No: PVP2017-65291
https://doi.org/10.1115/PVP2017-65291
View Paper titled, The Effectiveness of Non-Loosening Fasteners
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Topics: Fasteners, Simulation, Countermeasures, Screw threads, Thread
Proceedings Papers

Things to Concern for Finite Element Analyses

Yasumasa Shoji
Proc. ASME. PVP2015, Volume 2: Computer Technology and Bolted Joints, V002T02A019, July 19–23, 2015
Paper No: PVP2015-45718
https://doi.org/10.1115/PVP2015-45718
View Paper titled, Things to Concern for Finite Element Analyses
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Topics: Finite element analysis, Computer software, Finite element methods, Boundary-value problems, Computational methods, Design, Modeling
Proceedings Papers

Non-Loosening Performance of Plastically Pre-Deformed Nuts Under Cyclic Loads

Yasumasa Shoji, Susumu Kumakura, Toshiyuki Sawa
Proc. ASME. PVP2012, Volume 2: Computer Technology and Bolted Joints, 353-357, July 15–19, 2012
Paper No: PVP2012-78517
https://doi.org/10.1115/PVP2012-78517
View Paper titled, Non-Loosening Performance of Plastically Pre-Deformed Nuts Under Cyclic Loads
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Topics: Countermeasures, Deformation, Fasteners, Finite element analysis, Pipes, Pressure vessels, Stress
Proceedings Papers

Stress Concentration at the Root of Bolt Thread Under Twist With Deformable Flanges

Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2011, Volume 2: Computer Technology and Bolted Joints, 363-368, July 17–21, 2011
Paper No: PVP2011-57183
https://doi.org/10.1115/PVP2011-57183
View Paper titled, Stress Concentration at the Root of Bolt Thread Under Twist With Deformable Flanges
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Topics: Flanges, Stress concentration, Tension, Thread
Proceedings Papers

Stress Concentration at the Root of Bolt Thread

Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 2, 427-432, July 18–22, 2010
Paper No: PVP2010-25857
https://doi.org/10.1115/PVP2010-25857
View Paper titled, Stress Concentration at the Root of Bolt Thread
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Topics: Stress concentration, Thread, Stress, Finite element analysis, Structural analysis
Proceedings Papers

Finite Element Simulation for Bolted Flange Joints Assembly With Misalignment

Takashi Konnai, Hirokazu Tsuji, Yasumasa Shoji
Proc. ASME. PVP2009, Volume 2: Computer Applications/Technology and Bolted Joints, 125-130, July 26–30, 2009
Paper No: PVP2009-77471
https://doi.org/10.1115/PVP2009-77471
View Paper titled, Finite Element Simulation for Bolted Flange Joints Assembly With Misalignment
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Topics: Bolted flanges, Finite element analysis, Manufacturing, Simulation, Gaskets, Stress concentration, Acceptance criteria, Flanges, Information technology risk
Proceedings Papers

Self-Loosening Mechanism of Nuts Due to Cyclic Thermal Load

Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2009, Volume 2: Computer Applications/Technology and Bolted Joints, 99-105, July 26–30, 2009
Paper No: PVP2009-77447
https://doi.org/10.1115/PVP2009-77447
View Paper titled, Self-Loosening Mechanism of Nuts Due to Cyclic Thermal Load
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Topics: Stress, Finite element analysis, Engineering simulation, Machinery, Simulation, Temperature
Proceedings Papers

Self-Loosening Mechanism of Nuts Due to Lateral Motion of Fastened Plate

Yasumasa Shoji, Toshiyuki Sawa, Hiroshi Yamanaka
Proc. ASME. PVP2007, Volume 2: Computer Applications/Technology and Bolted Joints, 223-230, July 22–26, 2007
Paper No: PVP2007-26409
https://doi.org/10.1115/PVP2007-26409
View Paper titled, Self-Loosening Mechanism of Nuts Due to Lateral Motion of Fastened Plate
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Topics: Bolted joints, Countermeasures, Fasteners, Finite element analysis, Machinery, Vibration tests
Proceedings Papers

Mechanical Behavior of Rotational Screw Thread Loosening in Bolted Joints Under Repeated Temperature Changes

Toshiyuki Sawa, Mitsutoshi Ishimura, Yasumasa Shoji, Yusuke Fukuba
Proc. ASME. PVP2008, Volume 2: Computer Applications/Technology and Bolted Joints, 245-252, July 27–31, 2008
Paper No: PVP2008-61690
https://doi.org/10.1115/PVP2008-61690
View Paper titled, Mechanical Behavior of Rotational Screw Thread Loosening in Bolted Joints Under Repeated Temperature Changes
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Topics: Bolted joints, Mechanical behavior, Screw threads, Temperature, Finite element methods, Bearings, Accidents, Mechanical structures
Proceedings Papers

Self-Loosening Mechanism of Nuts Due to Impacts

Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2008, Volume 2: Computer Applications/Technology and Bolted Joints, 219-225, July 27–31, 2008
Paper No: PVP2008-61221
https://doi.org/10.1115/PVP2008-61221
View Paper titled, Self-Loosening Mechanism of Nuts Due to Impacts
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Topics: Bolted joints, Countermeasures, Fasteners, Finite element analysis, Machinery
Proceedings Papers

A Simplified Modeling of Gasket Stress-Strain Curve for FEM Analysis in Bolted Flange Joint Design

Satoshi Nagata, Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2002, Analysis of Bolted Joints, 53-58, August 5–9, 2002
Paper No: PVP2002-1082
https://doi.org/10.1115/PVP2002-1082
View Paper titled, A Simplified Modeling of Gasket Stress-Strain Curve for FEM Analysis in Bolted Flange Joint Design
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Topics: Bolted flanges, Design, Finite element methods, Finite element model, Gaskets, Modeling, Stress-strain curves, Elastic moduli, Flanges, Approximation
Proceedings Papers

An Effect of Gasket Contact Stress Distributions on the Tightness Estimation in Pipe Flange Connections by Finite Element Analyses

Yasumasa Shoji
Proc. ASME. PVP2004, Analysis of Bolted Joints, 113-120, July 25–29, 2004
Paper No: PVP2004-2629
https://doi.org/10.1115/PVP2004-2629
View Paper titled, An Effect of Gasket Contact Stress Distributions on the Tightness Estimation in Pipe Flange Connections by Finite Element Analyses
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Topics: Finite element analysis, Flange connections, Gaskets, Pipes, Stress, Tension, Electromagnetic scattering, Flanges, Leakage, Pressure
Proceedings Papers

Analytical Research on Mechanism of Bolt Loosening Due to Lateral Loads

Yasumasa Shoji, Toshiyuki Sawa
Proc. ASME. PVP2005, Volume 2: Computer Technology, 59-65, July 17–21, 2005
Paper No: PVP2005-71333
https://doi.org/10.1115/PVP2005-71333
View Paper titled, Analytical Research on Mechanism of Bolt Loosening Due to Lateral Loads
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Topics: Stress, Rotation, Thread, Bolted joints, Finite element analysis, Shapes, Tension, Wedges