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Yukihiko Okuda
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Journal Articles

Proposal of a Nonlinear Spring Model on Piping Support Structures for an Elastoplastic Response Analysis Method

Kiyotaka Takito, Yukihiko Okuda, Akemi Nishida, Yinsheng Li
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2024, 146(6): 061301.
Paper No: PVT-23-1165
https://doi.org/10.1115/1.4066278
Published Online: September 21, 2024
View Article titled, Proposal of a Nonlinear Spring Model on Piping Support Structures for an Elastoplastic Response Analysis Method
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Topics: Displacement, Modeling, Pipes, Stress, Stiffness
Proceedings Papers

Development of Seismic Response Analysis Method of Piping System: Proposal of the Nonlinear Spring Model for Piping Support Structures

Kiyotaka Takito, Yukihiko Okuda, Akemi Nishida, Yinsheng Li
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A005, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-108029
https://doi.org/10.1115/PVP2023-108029
View Paper titled, Development of Seismic Response Analysis Method of Piping System: Proposal of the Nonlinear Spring Model for Piping Support Structures
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Topics: Pipes, Piping systems, Springs
Proceedings Papers

Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles: Numerical Analysis on Test Results

Zuoyi Kang, Yukihiko Okuda, Akemi Nishida, Haruji Tsubota, Yinsheng Li
Proc. ASME. ICONE29, Volume 10: Advanced Methods of Manufacturing for Nuclear Reactors and Components, V010T10A001, August 8–12, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICONE29-88884
https://doi.org/10.1115/ICONE29-88884
View Paper titled, Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles: Numerical Analysis on Test Results
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Topics: Damage, Impact testing, Numerical analysis, Projectiles, Reinforced concrete
Journal Articles

Experimental Study on Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles

Yukihiko Okuda, Akemi Nishida, Zuoyi Kang, Haruji Tsubota, Yinsheng Li
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. April 2023, 9(2): 021801.
Paper No: NERS-21-1178
https://doi.org/10.1115/1.4054040
Published Online: June 15, 2022
View Article titled, Experimental Study on Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles
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Topics: Damage, Impact testing, Projectiles, Reinforced concrete
Proceedings Papers

Experimental and Analytical Investigation on Local Damage To Reinforced Concrete Panels Subjected to Projectile Impact Part 1: Penetration Damage Mode due to Normal Impact

Zuoyi Kang, Yukihiko Okuda, Akemi Nishida, Haruji Tsubota, Yinsheng Li
Proc. ASME. ICONE28, Volume 1: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications, V001T02A018, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-64521
https://doi.org/10.1115/ICONE28-64521
View Paper titled, Experimental and Analytical Investigation on Local Damage To Reinforced Concrete Panels Subjected to Projectile Impact Part 1: Penetration Damage Mode due to Normal Impact
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Topics: Damage, Projectiles, Reinforced concrete
Proceedings Papers

Hybrid Dynamic Response Test Focusing on the Support Structure of Piping Systems

Yukihiko Okuda, Akemi Nishida, Michiya Sakai, Yuzo Shiogama, Yinsheng Li
Proc. ASME. ICONE28, Volume 1: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications, V001T02A023, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-64586
https://doi.org/10.1115/ICONE28-64586
View Paper titled, Hybrid Dynamic Response Test Focusing on the Support Structure of Piping Systems
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Topics: Dynamic response, Piping systems, Pipes, Evaluation methods, Design, Mechanical behavior, Nuclear power stations, Probabilistic risk assessment, Structures
Proceedings Papers

Analytical Study of Perforation Damage to Reinforced Concrete Slabs Subjected to Oblique Impact by Projectiles With Different Nose Shapes

Zuoyi Kang, Yukihiko Okuda, Akemi Nishida, Haruji Tsubota, Yinsheng Li
Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T06A031, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICONE2020-16855
https://doi.org/10.1115/ICONE2020-16855
View Paper titled, Analytical Study of Perforation Damage to Reinforced Concrete Slabs Subjected to Oblique Impact by Projectiles With Different Nose Shapes
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Topics: Concrete slabs, Damage, Projectiles, Reinforced concrete, Shapes
Proceedings Papers

Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles: Outline of Impact Test

Akemi Nishida, Zuoyi Kang, Yukihiko Okuda, Haruji Tsubota, Yinsheng Li
Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T06A029, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICONE2020-16843
https://doi.org/10.1115/ICONE2020-16843
View Paper titled, Local Damage to Reinforced Concrete Panels Subjected to Oblique Impact by Projectiles: Outline of Impact Test
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Topics: Damage, Impact testing, Projectiles, Reinforced concrete
Proceedings Papers

Analytical Study on Dynamic Response of Reinforced Concrete Structure With Internal Equipment Subjected to Projectile Impact

Yukihiko Okuda, Zuoyi Kang, Akemi Nishida, Haruji Tsubota, Yinsheng Li
Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T06A030, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICONE2020-16849
https://doi.org/10.1115/ICONE2020-16849
View Paper titled, Analytical Study on Dynamic Response of Reinforced Concrete Structure With Internal Equipment Subjected to Projectile Impact
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Topics: Dynamic response, Projectiles, Reinforced concrete, Stress, Calibration, Waves, Impact testing, Nuclear power, Nuclear power stations, Robustness
Proceedings Papers

Evaluated Results of Seismic Design Approach Using Inelastic Dynamic Analysis for Equipment

Ichiro Tamura, Atsushi Okubo, Yusuke Minakawa, Tadashi Iijima, Yoshio Namita, Nobuyoshi Goshima, Masanori Amino, Yukihiko Okuda, Shunji Okuma
Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A035, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93532
https://doi.org/10.1115/PVP2019-93532
View Paper titled, Evaluated Results of Seismic Design Approach Using Inelastic Dynamic Analysis for Equipment
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Topics: Cantilevers, Dynamic analysis, Earthquake resistant design, Safety, Evaluation methods, Stress, Deformation, Design, Elastic analysis, Inelastic analysis
Proceedings Papers

Development of Seismic Design Approach Using Inelastic Dynamic Analysis for Equipment and Piping Systems

Ichiro Tamura, Atsushi Okubo, Yusuke Minakawa, Tadashi Iijima, Nobuyoshi Goshima, Masanori Amino, Yukihiko Okuda, Shunji Okuma
Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A024, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84126
https://doi.org/10.1115/PVP2018-84126
View Paper titled, Development of Seismic Design Approach Using Inelastic Dynamic Analysis for Equipment and Piping Systems
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Topics: Dynamic analysis, Earthquake resistant design, Piping systems, Cantilever beams, Design, Deformation, Design methodology, Ductility, Elastic analysis, Nuclear power stations
Proceedings Papers

A Simplified Analysis Method for Elasto-Plastic Seismic Response Using the Energy Balance Equation of a Maximum Hysteresis Loop

Gaku Nakamura, Yukihiko Okuda, Shoichi Ebato, Hiroshi Niwa, Tadashi Iijima, Takamasa Hirai, Katsuhisa Inagaki
Proc. ASME. PVP2015, Volume 8: Seismic Engineering, V008T08A013, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45531
https://doi.org/10.1115/PVP2015-45531
View Paper titled, A Simplified Analysis Method for Elasto-Plastic Seismic Response Using the Energy Balance Equation of a Maximum Hysteresis Loop
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Topics: Energy budget (Physics), Displacement, Degrees of freedom, Vibration tests, Cantilevers, Design, Earthquakes, Resonance, Safety, Waves
Proceedings Papers

Seismic Margin Evaluation Methods Using Equivalent SDOF Model and Elasto-Plastic Response Spectrum

Shohei Onitsuka, Tadashi Iijima, Yuichi Ushio, Yukihiko Okuda, Takamasa Hirai, Katsuhisa Inagaki
Proc. ASME. PVP2015, Volume 8: Seismic Engineering, V008T08A012, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45469
https://doi.org/10.1115/PVP2015-45469
View Paper titled, Seismic Margin Evaluation Methods Using Equivalent SDOF Model and Elasto-Plastic Response Spectrum
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Topics: Evaluation methods, Vibration tests, Finite element methods, Finite element model, Displacement, Computation, Waves, Cantilevers, Computers, Degrees of freedom
Proceedings Papers

Numerical Estimation of Flow Penetrating Depth Into Stagnant Branch Pipes for Thermal Fatigue Prediction

Yoshihiro Ishikawa, Yukihiko Okuda, Naoto Kasahara
Proc. ASME. PVP2014, Volume 3: Design and Analysis, V003T03A007, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28382
https://doi.org/10.1115/PVP2014-28382
View Paper titled, Numerical Estimation of Flow Penetrating Depth Into Stagnant Branch Pipes for Thermal Fatigue Prediction
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Topics: Fatigue, Flow (Dynamics), Pipes, Thermal stratification, Temperature, Water, Thermal stresses, High temperature, Boundary layers, Cavity flows
Proceedings Papers

Welding Residual Stress Analysis Using Axisymmetric Modeling for Shroud Support Structure

Kazuo Ogawa, Yukihiko Okuda, Toshiyuki Saito, Takahiro Hayashi, Rie Sumiya
Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 289-297, July 27–31, 2008
Publisher: American Society of Mechanical Engineers
Paper No: PVP2008-61148
https://doi.org/10.1115/PVP2008-61148
View Paper titled, Welding Residual Stress Analysis Using Axisymmetric Modeling for Shroud Support Structure
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Topics: Modeling, Stress analysis (Engineering), Welding, Boiling water reactors, Stress, Manufacturing, Welded joints, Fracture (Materials), Residual stresses, Safety
Proceedings Papers

Crack Propagation Analysis Procedure Using FEM Applied to the Three-Dimensional Stress Field

Yukihiko Okuda, Yuuji Saito, Masayuki Asano, Masakazu Jimbo, Hiroshi Hirayama, Masaaki Kikuchi
Proc. ASME. PVP2005, Volume 3: Design and Analysis, 207-214, July 17–21, 2005
Publisher: American Society of Mechanical Engineers
Paper No: PVP2005-71060
https://doi.org/10.1115/PVP2005-71060
View Paper titled, Crack Propagation Analysis Procedure Using FEM Applied to the Three-Dimensional Stress Field
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Topics: Crack propagation, Finite element methods, Stress, Fracture (Materials), Shapes, Boiling water reactors, Fatigue cracks, Inspection, Nuclear power stations, Stress concentration