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Journal Articles

Study on Dynamic Postbuckling Stability of Fast Reactor Vessels Subjected to Vertical Vibration

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Yiji Ye, Masakazu Ichimiya, Naoto Kasahara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. February 2025, 147(1): 011901.
Paper No: PVT-24-1091
https://doi.org/10.1115/1.4066907
Published Online: November 22, 2024
View Articletitled, Study on Dynamic Postbuckling Stability of Fast Reactor Vessels Subjected to Vertical Vibration
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Topics: Buckling, Compression, Displacement, Stability, Stress, Vibration, Cylinders, Design, Gravity (Force)
Proceedings Papers

Fundamental Study on Passive Safety Characteristics of Piping System Against Excessive Earthquake

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Riku Horinouchi, Yotaro Yamamoto, Naoto Kasahara
Proc. ASME. PVP2024, Volume 5: Operations, Applications, & Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A016, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-122090
https://doi.org/10.1115/PVP2024-122090
View Paper titled, Fundamental Study on Passive Safety Characteristics of Piping System Against Excessive Earthquake
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Topics: Earthquakes, Failure, Piping systems, Safety, Vibration analysis, Vibration tests
Journal Articles

Study on Dynamic Post-Buckling Stability of Thin-Walled Cylinders Subjected to Horizontal Vibration

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Yiji Ye, Sho Hasegawa, Masakazu Ichimiya, Naoto Kasahara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2024, 146(3): 031303.
Paper No: PVT-23-1150
https://doi.org/10.1115/1.4065176
Published Online: April 8, 2024
View Articletitled, Study on Dynamic Post-Buckling Stability of Thin-Walled Cylinders Subjected to Horizontal Vibration
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Topics: Buckling, Displacement, Stability, Finite element methods, Vibration, Cylinders, Stress, Simulation, Finite element model
Proceedings Papers

Study on Dynamic Buckling Behavior and Post-Buckling Stability of Thin-Walled Cylinders Subjected to Lateral Vibration

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Yiji Ye, Sho Hasegawa, Naoto Kasahara
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A008, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-105543
https://doi.org/10.1115/PVP2023-105543
View Paper titled, Study on Dynamic Buckling Behavior and Post-Buckling Stability of Thin-Walled Cylinders Subjected to Lateral Vibration
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Topics: Buckling, Cylinders, Design, Earthquakes, Fast neutron reactors, Stability, Vessels, Vibration
Proceedings Papers

Proposal of Performance-Based Seismic Fragility Concept Related to Failure Modes for a Piping System

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Akihiro Mano, Takuya Sato, Masakazu Ichimiya, Naoto Kasahara
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A018, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106165
https://doi.org/10.1115/PVP2023-106165
View Paper titled, Proposal of Performance-Based Seismic Fragility Concept Related to Failure Modes for a Piping System
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Topics: Cooling, Failure mechanisms, Flow (Dynamics), Piping systems
Proceedings Papers

Study on Post-Buckling Behaviors of Lower Heads for Fracture Control of Reactor Vessels Under BDBE

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Naoto Kasahara, Masato Murohara, Takuya Sato
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A037, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84449
https://doi.org/10.1115/PVP2022-84449
View Paper titled, Study on Post-Buckling Behaviors of Lower Heads for Fracture Control of Reactor Vessels Under BDBE
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Topics: Buckling, Fracture (Materials), Fracture (Process), Reactor vessels, Vessels
Proceedings Papers

Plan of a Shaking Table Test on a Piping System Model for Verifying the Fracture-Control Concept

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Izumi Nakamura, Naoto Kasahara
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A036, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84266
https://doi.org/10.1115/PVP2022-84266
View Paper titled, Plan of a Shaking Table Test on a Piping System Model for Verifying the Fracture-Control Concept
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Topics: Fracture (Materials), Fracture (Process), Pipes, Piping systems
Proceedings Papers

Prediction Concept of Ratchet-Induced Collapse Under Deadweight and Seismic Loading

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Satoru Kai, Masakazu Ichimiya, Naoto Kasahara
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A038, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84508
https://doi.org/10.1115/PVP2022-84508
View Paper titled, Prediction Concept of Ratchet-Induced Collapse Under Deadweight and Seismic Loading
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Topics: Collapse
Journal Articles

Normalized Ratcheting Diagram Under Sinusoidal Vibration Waves

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Jinqi Lyu, Naoto Kasahara, Masakazu Ichimiya, Ryunosuke Sasaki
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2022, 144(3): 031305.
Paper No: PVT-20-1193
https://doi.org/10.1115/1.4053222
Published Online: February 10, 2022
View Articletitled, Normalized Ratcheting Diagram Under Sinusoidal Vibration Waves
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Topics: Pipes, Stress, Vibration, Waves, Shapes, Deformation
Journal Articles

Discussion on Failure Behavior of Piping Systems Under Extremely Large Seismic Loads in BDBE

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Izumi Nakamura, Naoto Kasahara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2022, 144(3): 031901.
Paper No: PVT-20-1209
https://doi.org/10.1115/1.4053223
Published Online: January 18, 2022
View Articletitled, Discussion on Failure Behavior of Piping Systems Under Extremely Large Seismic Loads in BDBE
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Topics: Alloys, Collapse, Failure, Failure mechanisms, Pipes, Piping systems, Simulation, Stress, Weight (Mass), Cycles
Proceedings Papers

Study on Buckling Strength and Post Buckling Behaviors of Reactor Vessel Lower Heads

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Masato Murohara, Akira Yamazaki, Takuya Sato, Naoto Kasahara
Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A072, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-65553
https://doi.org/10.1115/ICONE28-65553
View Paper titled, Study on Buckling Strength and Post Buckling Behaviors of Reactor Vessel Lower Heads
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Topics: Buckling, Reactor vessels, Failure, Design, Accidents, Deformation, Earthquakes, Fukushima nuclear disaster, Japan, 2011, High temperature, Nuclear reactor accidents
Proceedings Papers

Example Proposals of Fracture Controlled Vessels and Piping for Failure Mitigations

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Naoto Kasahara, Takashi Wakai, Izumi Nakamura, Takuya Sato, Masakazu Ichimiya
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A031, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61952
https://doi.org/10.1115/PVP2021-61952
View Paper titled, Example Proposals of Fracture Controlled Vessels and Piping for Failure Mitigations
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Topics: Design, Failure, Fracture (Materials), Fracture (Process), Pipes, Vessels
Proceedings Papers

Proposal of Simulation Material Test Technique for Clarifying the Structure Failure Mechanisms Under Excessive Seismic Loads

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Ryuta Hashidate, Shoichi Kato, Takashi Onizawa, Takashi Wakai, Naoto Kasahara
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A029, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61866
https://doi.org/10.1115/PVP2021-61866
View Paper titled, Proposal of Simulation Material Test Technique for Clarifying the Structure Failure Mechanisms Under Excessive Seismic Loads
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Topics: Constitutive equations, Failure mechanisms, Lead alloys, Simulation, Stress
Proceedings Papers

Dynamic Behavior of a Simplified Cantilever With Progressive Static Loading due to Ratchet Deformation

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Satoru Kai, Naoto Kasahara, Masakazu Ichimiya
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A030, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61878
https://doi.org/10.1115/PVP2021-61878
View Paper titled, Dynamic Behavior of a Simplified Cantilever With Progressive Static Loading due to Ratchet Deformation
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Topics: Cantilevers, Deformation, Failure mechanisms, Failure, Accidents, Excitation, Stress, Weight (Mass), Collapse, Cycles
Proceedings Papers

Frequency Dependency of Beam Collapse due to Vibration Loads

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Ryunosuke Sasaki, Masakazu Ichimiya, Jinqi Lyu, Naoto Kasahara
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A040, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21375
https://doi.org/10.1115/PVP2020-21375
View Paper titled, Frequency Dependency of Beam Collapse due to Vibration Loads
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Topics: Collapse, Stress, Vibration
Proceedings Papers

Proposal of Simulation Materials Test Technique and Their Constitutive Equations for Structural Tests and Analyses Simulating Severe Accident Conditions

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Ryuta Hashidate, Shoichi Kato, Takashi Onizawa, Takashi Wakai, Naoto Kasahara
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A041, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21397
https://doi.org/10.1115/PVP2020-21397
View Paper titled, Proposal of Simulation Materials Test Technique and Their Constitutive Equations for Structural Tests and Analyses Simulating Severe Accident Conditions
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Topics: Accidents, Constitutive equations, Lead alloys, Simulation
Proceedings Papers

Application of Fracture Control to Mitigate Failure Consequence Under BDBE

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Naoto Kasahara, Takashi Wakai, Izumi Nakamura, Takuya Sato, Masakazu Ichimiya
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A038, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21072
https://doi.org/10.1115/PVP2020-21072
View Paper titled, Application of Fracture Control to Mitigate Failure Consequence Under BDBE
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Topics: Design, Failure, Failure mechanisms, Fracture (Materials), Fracture (Process)
Proceedings Papers

Investigation on Failure Behavior of Two-Elbow Piping System Models Made of the Simulation Material Under Excessive Seismic Loads

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Izumi Nakamura, Naoto Kasahara
Proc. ASME. PVP2020, Volume 3: Design and Analysis, V003T03A039, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21140
https://doi.org/10.1115/PVP2020-21140
View Paper titled, Investigation on Failure Behavior of Two-Elbow Piping System Models Made of the Simulation Material Under Excessive Seismic Loads
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Topics: Alloys, Collapse, Failure, Failure mechanisms, Piping systems, Simulation, Stress
Proceedings Papers

Experimental and Analytical Study on Local Failure of Structure Subjected to High Temperature and Pressure

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Yoshiki Tsunemoto, Takashi Sakaguchi, Takuya Sato, Naoto Kasahara
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A038, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93166
https://doi.org/10.1115/PVP2019-93166
View Paper titled, Experimental and Analytical Study on Local Failure of Structure Subjected to High Temperature and Pressure
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Topics: Ductile fracture, Failure, High temperature, Hydrostatics, Pressure, Stress
Proceedings Papers

Research Plan and Progress to Realize Fracture Control of Nuclear Components

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Naoto Kasahara, Takashi Wakai, Izumi Nakamura, Takuya Sato
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A039, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93545
https://doi.org/10.1115/PVP2019-93545
View Paper titled, Research Plan and Progress to Realize Fracture Control of Nuclear Components
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Topics: Design, Failure mechanisms, Fracture (Materials)