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Proceedings Papers

Study on Applicability of FEMA Formula in Prediction of Impact Load by Tsunami Drifting Vessels on Coastal Zone Structures

Koichi Masuda, Tomoki Ikoma, Hiroaki Eto, Yasuhiro Aida, Kazuki Murata
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A015, August 3–7, 2020
Paper No: OMAE2020-19088
https://doi.org/10.1115/OMAE2020-19088
View Paper titled, Study on Applicability of FEMA Formula in Prediction of Impact Load by Tsunami Drifting Vessels on Coastal Zone Structures
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Topics: Collisions (Physics), FEMA, Shorelines, Stress, Tsunamis, Vessels
Proceedings Papers

Effects of Scale and Configuration of Air Chamber of OWC Type WECs on Air Chamber Characteristics

Tomoki Ikoma, Shota Hirai, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A014, August 3–7, 2020
Paper No: OMAE2020-18762
https://doi.org/10.1115/OMAE2020-18762
View Paper titled, Effects of Scale and Configuration of Air Chamber of OWC Type WECs on Air Chamber Characteristics
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Topics: Design, Ducts, Manifolds, Oscillations, Potential theory (Physics), Pressure, Probes, Shapes, Turbines, Water
Proceedings Papers

Characteristics of OWC Type WEC Dampers Installed on a Very Large Floating Structure

Tomoki Ikoma, Shoichiro Furuya, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A027, August 3–7, 2020
Paper No: OMAE2020-19002
https://doi.org/10.1115/OMAE2020-19002
View Paper titled, Characteristics of OWC Type WEC Dampers Installed on a Very Large Floating Structure
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Topics: Dampers, Floating structures, Computational methods, Floating bodies, Oceans, Oscillations, Potential theory (Physics), Seawater, Water, Wave energy
Proceedings Papers

A Fundamental Study on Motion Characteristics of the Large-Scale Floating Coal Transshipment Station by Elastic Mooring Lines

Hiroaki Eto, Ryo Sekiguchi, Hitomi Kashima, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A025, August 3–7, 2020
Paper No: OMAE2020-18958
https://doi.org/10.1115/OMAE2020-18958
View Paper titled, A Fundamental Study on Motion Characteristics of the Large-Scale Floating Coal Transshipment Station by Elastic Mooring Lines
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Topics: Coal, Mooring, Tension, Floating bodies, Tides, Chain, Ocean engineering, Oscillations, Pacific Ocean, Piers (Structural)
Proceedings Papers

On GIS Based Selection of Suitable Site Including Cooperation With Surrounding Medical Facilities by Mesh Analysis of Floating Medical Support System on Big Disaster

Hiroaki Eto, Sena Shimomoto, Sachio Togawa, Morikazu Yamamoto, Shintaro Miyasawa, Junko Yamaguchi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda, Hiroki Udagawa
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A021, August 3–7, 2020
Paper No: OMAE2020-19026
https://doi.org/10.1115/OMAE2020-19026
View Paper titled, On GIS Based Selection of Suitable Site Including Cooperation With Surrounding Medical Facilities by Mesh Analysis of Floating Medical Support System on Big Disaster
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Topics: Biomedicine, Disasters, Earthquakes, Structures, Water, Damage, Rivers, Shorelines, Transportation systems, Cities
Proceedings Papers

A Fundamental Study on Plastic Strain Accompanying Deformation in Large-Scale Floating Coal Transshipment Station

Ryo Nishigochi, Hiroaki Eto, Koji Iizuka, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A026, August 3–7, 2020
Paper No: OMAE2020-18962
https://doi.org/10.1115/OMAE2020-18962
View Paper titled, A Fundamental Study on Plastic Strain Accompanying Deformation in Large-Scale Floating Coal Transshipment Station
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Topics: Coal, Deformation, Breakwaters, Modeling, Stress, Stress concentration, Boundary-value problems, Floating bodies, Floating structures, Ocean engineering
Proceedings Papers

Effects of Four Moon Pools on a Floating System Installed With Twin-VAWTs

Tomoki Ikoma, Mitsuru Nakamura, Satsuya Moritsu, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. IOWTC2019, ASME 2019 2nd International Offshore Wind Technical Conference, V001T01A016, November 3–6, 2019
Paper No: IOWTC2019-7598
https://doi.org/10.1115/IOWTC2019-7598
View Paper titled, Effects of Four Moon Pools on a Floating System Installed With Twin-VAWTs
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Topics: Vertical axis wind turbines
Proceedings Papers

A Basic Study on Influence of Airchamber Volume on OWC Models to Power Conversion Performance

Tomoki Ikoma, Yoshiyuki Kihara, Shota Hirai, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A027, June 9–14, 2019
Paper No: OMAE2019-95925
https://doi.org/10.1115/OMAE2019-95925
View Paper titled, A Basic Study on Influence of Airchamber Volume on OWC Models to Power Conversion Performance
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Topics: Energy conversion, Water, Pressure, Oscillations, Air flow, Design, Radiation (Physics), Turbines, Wave energy converters, Waves
Proceedings Papers

Response Characteristics of a Floating Structure With Moon Pools Installed With Vertical Axis Wind Turbines

Mitsuru Nakamura, Tomoki Ikoma, Hiroaki Eto, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A028, June 9–14, 2019
Paper No: OMAE2019-96045
https://doi.org/10.1115/OMAE2019-96045
View Paper titled, Response Characteristics of a Floating Structure With Moon Pools Installed With Vertical Axis Wind Turbines
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Topics: Floating structures, Vertical axis wind turbines, Waves, Turbines, Green's function methods, Potential theory (Physics)
Proceedings Papers

Effect of Coal Loading Conditions on Structural Characteristics of LFTS

Hiroaki Eto, Koji Iizuka, Ryo Nishigochi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A047, June 9–14, 2019
Paper No: OMAE2019-96482
https://doi.org/10.1115/OMAE2019-96482
View Paper titled, Effect of Coal Loading Conditions on Structural Characteristics of LFTS
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Topics: Coal, Waves, Finite element methods, Ocean engineering, Stress concentration, Deformation, Design methodology, Displacement, Elasticity, Fracture toughness
Proceedings Papers

On GIS Based Facility Scale and Selection of Suitable Site of Floating Medical Support System on Big Disaster

Hiroaki Eto, Sachio Togawa, Morikazu Yamamoto, Shintaro Miyasawa, Junko Yamaguchi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda, Sena Shimomoto, Yuichi Kitabatake
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A048, June 9–14, 2019
Paper No: OMAE2019-96493
https://doi.org/10.1115/OMAE2019-96493
View Paper titled, On GIS Based Facility Scale and Selection of Suitable Site of Floating Medical Support System on Big Disaster
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Topics: Biomedicine, Disasters, Earthquakes, Emergencies, Tsunamis, Collapse, Damage, Emergency management, Risk, Rivers
Proceedings Papers

Introduction of Virtual Structural Boundary for Collision Force Analysis of Tsunami Drifting Objects in Particle Method

Yasuhiro Aida, Koichi Masuda, Tomoki Ikoma, Hiroaki Eto
Proc. ASME. OMAE2019, Volume 6: Ocean Space Utilization, V006T05A018, June 9–14, 2019
Paper No: OMAE2019-95408
https://doi.org/10.1115/OMAE2019-95408
View Paper titled, Introduction of Virtual Structural Boundary for Collision Force Analysis of Tsunami Drifting Objects in Particle Method
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Topics: Boundary-value problems, Collisions (Physics), Mirrors, Particulate matter, Tsunamis
Journal Articles

Basic Characteristics of the Primary Conversion of an Oscillating Water Column Type Wave Energy Converter Installed on a Wave-Dissipating Double Caisson

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Shogo Shibuya
Journal: Journal of Offshore Mechanics and Arctic Engineering
Article Type: Research-Article
J. Offshore Mech. Arct. Eng. December 2019, 141(6): 061902.
Paper No: OMAE-18-1088
https://doi.org/10.1115/1.4042943
Published Online: March 20, 2019
View Article titled, Basic Characteristics of the Primary Conversion of an Oscillating Water Column Type Wave Energy Converter Installed on a Wave-Dissipating Double Caisson
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Topics: Caissons, Nozzles, Pressure, Water, Waves, Wave energy
Proceedings Papers

Basic Characteristics of the Primary Conversion of an OWC Type WEC Installed on a Wave Dissipating Double-Caisson

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Shogo Shibuya
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A019, June 17–22, 2018
Paper No: OMAE2018-77020
https://doi.org/10.1115/OMAE2018-77020
View Paper titled, Basic Characteristics of the Primary Conversion of an OWC Type WEC Installed on a Wave Dissipating Double-Caisson
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Topics: Caissons, Waves, Pressure, Water, Wave energy, Wave energy converters
Proceedings Papers

A Towing Test of a Floating Type VAMT With Cycloidal Pitch-Controlled Blades

Tomoki Ikoma, Hiroaki Eto, Koichi Masuda, Atsuhiro Oguchi
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A022, June 17–22, 2018
Paper No: OMAE2018-77443
https://doi.org/10.1115/OMAE2018-77443
View Paper titled, A Towing Test of a Floating Type VAMT With Cycloidal Pitch-Controlled Blades
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Topics: Blades, Turbines, Seas, Tides, Floating structures, Generators, Torque, Electric power generation, Gears, Rotation
Proceedings Papers

A Fundamental Study on Motion Characteristics and Cargo Handling Efficiency of the Large-Scale Floating Coal Transshipment Station

Hiroaki Eto, Yoh Shikita, Tomoki Ikoma, Koichi Masuda, Hiroaki Kihara
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A030, June 17–22, 2018
Paper No: OMAE2018-77727
https://doi.org/10.1115/OMAE2018-77727
View Paper titled, A Fundamental Study on Motion Characteristics and Cargo Handling Efficiency of the Large-Scale Floating Coal Transshipment Station
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Topics: Coal, Stress, Fluids, Wave drift forces, Waves, Wind, Floating bodies, Ocean engineering, Pacific Ocean, Seabed
Proceedings Papers

A Fundamental Study on Collision of a Tsunami Drifting Objects Against Structures Using MPS Method and FEM

Koichi Masuda, Tomoki Ikoma, Daichi Murata, Hiroaki Eto, Akihiro Matsuoka, Yasuhiro Aida, Masaharu Ikegami
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A027, June 17–22, 2018
Paper No: OMAE2018-77874
https://doi.org/10.1115/OMAE2018-77874
View Paper titled, A Fundamental Study on Collision of a Tsunami Drifting Objects Against Structures Using MPS Method and FEM
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Topics: Collisions (Physics), Finite element methods, Tsunamis, Deformation, Shorelines, Stress, Automobiles, Computer simulation, Damage, Design
Proceedings Papers

A Fundamental Research on Countermeasure of Disaster Mitigation and Impact Force to Cause Drifting Ship

Kazuki Murata, Koichi Masuda, Tomoki Ikoma, Hiroaki Eto, Yasuhiro Aida, Akihiro Matsuoka
Proc. ASME. OMAE2017, Volume 6: Ocean Space Utilization, V006T05A026, June 25–30, 2017
Paper No: OMAE2017-62178
https://doi.org/10.1115/OMAE2017-62178
View Paper titled, A Fundamental Research on Countermeasure of Disaster Mitigation and Impact Force to Cause Drifting Ship
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Topics: Countermeasures, Hazard mitigation, Ships, Damage, Shorelines, Tsunamis, Vessels, Waves, Automobiles, Collisions (Physics)
Proceedings Papers

Effect of Coal Loading Conditions on Elastic Behavior of Large-Scale Floating Transshipment Station (LFTS)

Hiroaki Eto, Chiaki Sato, Koichi Masuda, Tomoki Ikoma, Mitsuru Kubota, Tomoyuki Kishida
Proc. ASME. OMAE2017, Volume 6: Ocean Space Utilization, V006T05A030, June 25–30, 2017
Paper No: OMAE2017-61897
https://doi.org/10.1115/OMAE2017-61897
View Paper titled, Effect of Coal Loading Conditions on Elastic Behavior of Large-Scale Floating Transshipment Station (LFTS)
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Topics: Coal, Elasticity, Rivers, Clearances (Engineering), Deformation, Finite element methods, Ocean engineering, Breakwaters, Deflection, Failure
Proceedings Papers

Effects of Disturbance of Current Field on Power Characteristics of a Floating Type Pitch-Controlled VAMT in a Real Sea

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Chang-Kyu Rheem, Osamu Enomoto
Proc. ASME. OMAE2016, Volume 6: Ocean Space Utilization; Ocean Renewable Energy, V006T05A011, June 19–24, 2016
Paper No: OMAE2016-54693
https://doi.org/10.1115/OMAE2016-54693
View Paper titled, Effects of Disturbance of Current Field on Power Characteristics of a Floating Type Pitch-Controlled VAMT in a Real Sea
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Topics: Seas, Turbines, Ocean waves, Fluids, Blades, Design, Floating bodies, Tides