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Proceedings Papers

Effect of Friction and Gaps on Elastic-Plastic Piping Supports

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Wataru Kobayashi, Akihito Otani, Satoru Kai
Proc. ASME. PVP2024, Volume 5: Operations, Applications, & Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A021, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-123571
https://doi.org/10.1115/PVP2024-123571
View Paper titled, Effect of Friction and Gaps on Elastic-Plastic Piping Supports
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Topics: Damping, Friction, Pipes
Proceedings Papers

Design Margins of Fatigue Life of Carbon Steel Elbows and Tees Subjected to Reversing Dynamic Loads

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Kisaburo Azuma, Keita Fujiwara, Satoru Kai, Akihito Otani, Osamu Furuya
Proc. ASME. PVP2024, Volume 5: Operations, Applications, & Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A020, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-123304
https://doi.org/10.1115/PVP2024-123304
View Paper titled, Design Margins of Fatigue Life of Carbon Steel Elbows and Tees Subjected to Reversing Dynamic Loads
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Topics: Carbon steel, Design, Earthquake resistant design, Fatigue life, Low cycle fatigue, Pipes, Stress, Cycles, Pipe fittings, Piping systems
Proceedings Papers

Benchmark Analysis on Pipe Support Structures for Establishing Inelastic Seismic Design

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Izumi Nakamura, Kiyotaka Takito, Ryuya Shimazu, Yukihiko Okuda, Michiya Sakai, Akihito Otani, Tomoyoshi Watakabe, Takahiro Okuda, Tadahiro Shibutani, Masaki Shiratori
Proc. ASME. PVP2024, Volume 5: Operations, Applications, & Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A028, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-123075
https://doi.org/10.1115/PVP2024-123075
View Paper titled, Benchmark Analysis on Pipe Support Structures for Establishing Inelastic Seismic Design
Open the PDF for Benchmark Analysis on Pipe Support Structures for Establishing Inelastic Seismic Design in another window
Topics: Earthquake resistant design, Finite element methods, Pipes
Proceedings Papers

Experiment of Floating Seismic Isolation System

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Takashi Mori, Takahiro Shimada, Satoru Kai, Akihito Otani, Tomohiko Yamamoto, Xing L. Yan
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A021, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-102224
https://doi.org/10.1115/PVP2023-102224
View Paper titled, Experiment of Floating Seismic Isolation System
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Topics: Cavities, Damping, Design, Excitation, Floating structures, Ocean engineering, Orifices, Physics, Seismic waves, Small modular reactors
Proceedings Papers

Uncertain Factors in Elastic-Plastic Finite Element Analysis for Elbows and Tees

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Kisaburo Azuma, Keita Fujiwara, Satoru Kai, Akihito Otani, Osamu Furuya
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A012, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106166
https://doi.org/10.1115/PVP2023-106166
View Paper titled, Uncertain Factors in Elastic-Plastic Finite Element Analysis for Elbows and Tees
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Topics: Finite element analysis, Low cycle fatigue
Proceedings Papers

On Multiaxial Strain Characteristics of Piping Systems Subjected to Earthquake Loads

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Masaki Morishita, Akihito Otani
Proc. ASME. ICONE29, Volume 6: Nuclear Codes, Standards, Licensing, and Regulatory Issues, V006T06A002, August 8–12, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICONE29-90172
https://doi.org/10.1115/ICONE29-90172
View Paper titled, On Multiaxial Strain Characteristics of Piping Systems Subjected to Earthquake Loads
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Topics: Cycles, Earthquake resistant design, Earthquakes, Fatigue, Pipes, Piping systems, Stress, Excitation, ASME Boiler and Pressure Vessel Code, Deformation
Proceedings Papers

Research and Examination of Seismic Safety Evaluation and Function Maintenance for Important Equipment in Nuclear Facilities

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Osamu Furuya, Satoshi Fujita, Hitoshi Muta, Yasuki Ohtori, Tatsuya Itoi, Shigeki Okamura, Keisuke Minagawa, Izumi Nakamura, Shigeru Fujimoto, Akihito Otani, Akemi Nishida, Tomoyoshi Watakabe
Proc. ASME. PVP2021, Volume 5: Operations, Applications, and Components; Seismic Engineering; Non-Destructive Examination, V005T08A022, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61781
https://doi.org/10.1115/PVP2021-61781
View Paper titled, Research and Examination of Seismic Safety Evaluation and Function Maintenance for Important Equipment in Nuclear Facilities
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Topics: Maintenance, Nuclear power stations, Safety
Journal Articles

A JSME Code Case on Piping Seismic Design Based on Inelastic Response Analysis and Strain-Based Fatigue Criteria

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Masaki Morishita, Akihito Otani, Izumi Nakamura, Tomoyoshi Watakabe, Tadahiro Shibutani, Masaki Shiratori
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2020, 142(2): 021203.
Paper No: PVT-19-1160
https://doi.org/10.1115/1.4045674
Published Online: February 24, 2020
View Articletitled, A JSME Code Case on Piping Seismic Design Based on Inelastic Response Analysis and Strain-Based Fatigue Criteria
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Topics: Fatigue, Pipes, Earthquake resistant design, Design, Cycles, Stress, Damping
Journal Articles

Benchmark Analyses on the Elastic–Plastic Behavior of Carbon Steel Pipes Under Seismic Load

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Izumi Nakamura, Tomoyoshi Watakabe, Akihito Otani, Tadahiro Shibutani, Masaki Morishita, Masaki Shiratori
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2020, 142(2): 021901.
Paper No: PVT-19-1085
https://doi.org/10.1115/1.4045606
Published Online: February 24, 2020
View Articletitled, Benchmark Analyses on the Elastic–Plastic Behavior of Carbon Steel Pipes Under Seismic Load
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Topics: Pipes, Piping systems, Yield stress, Stress, Carbon steel, Work hardening, Approximation
Proceedings Papers

Applicability of Seismic Fatigue Evaluation by JSME Code Case, NC-CC-008

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Akihito Otani, Izumi Nakamura, Tomoyoshi Watakabe, Masaki Morishita, Tadahiro Shibutani, Masaki Shiratori
Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A001, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93123
https://doi.org/10.1115/PVP2019-93123
View Paper titled, Applicability of Seismic Fatigue Evaluation by JSME Code Case, NC-CC-008
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Topics: Cycles, Earthquake resistant design, Fatigue, JSME Standards, Pipes
Proceedings Papers

Failure Modes of Piping Systems Under Seismic Loading and Evaluation

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Satoru Kai, Akihito Otani
Proc. ASME. PVP2019, Volume 8: Seismic Engineering, V008T08A026, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93438
https://doi.org/10.1115/PVP2019-93438
View Paper titled, Failure Modes of Piping Systems Under Seismic Loading and Evaluation
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Topics: Collapse, Failure mechanisms, Pipes, Piping systems, Stress, Deformation, Failure, Buckling, Cantilevers, Cycles
Proceedings Papers

Application of JSME Seismic Code Case by Elastic-Plastic Response Analysis to Practical Piping System

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Akihito Otani, Satoru Kai, Naoaki Kaneko, Tomoyoshi Watakabe, Masanori Ando, Kazuyuki Tsukimori
Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A001, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84079
https://doi.org/10.1115/PVP2018-84079
View Paper titled, Application of JSME Seismic Code Case by Elastic-Plastic Response Analysis to Practical Piping System
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Topics: Japan Society of Mechanical Engineers, Piping systems, Earthquake resistant design, Fatigue, Pipes, Breeder reactors, Coolants, Engineering standards, Piping design, Stiffness
Proceedings Papers

Effect of Static Load Components in Seismic Loading on Gross Plastic Deformation on Structure

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Satoru Kai, Akihito Otani
Proc. ASME. PVP2018, Volume 8: Seismic Engineering, V008T08A021, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84415
https://doi.org/10.1115/PVP2018-84415
View Paper titled, Effect of Static Load Components in Seismic Loading on Gross Plastic Deformation on Structure
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Topics: Deformation, Stress, Collapse, Failure mechanisms, Inertia (Mechanics), Materials properties, Weight (Mass)
Proceedings Papers

A Concept of Intermediate Heat Exchanger for High-Temperature Gas Reactor Hydrogen and Power Cogeneration System

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Noriaki Hirota, Atsuhiko Terada, Xing L. Yan, Kohei Tanaka, Akihito Otani
Proc. ASME. ICONE26, Volume 1: Operations and Maintenance, Engineering, Modifications, Life Extension, Life Cycle, and Balance of Plant; Instrumentation and Control (I&C) and Influence of Human Factors; Innovative Nuclear Power Plant Design and SMRs, V001T13A015, July 22–26, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ICONE26-81718
https://doi.org/10.1115/ICONE26-81718
View Paper titled, A Concept of Intermediate Heat Exchanger for High-Temperature Gas Reactor Hydrogen and Power Cogeneration System
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Topics: Combined heat and power, Heat exchangers, High temperature, Hydrogen, Nuclear reactors, Conceptual design, Design, Gas turbines, Construction, Creep
Journal Articles

Study on Piping Seismic Response Under Multiple Excitation

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Satoru Kai, Tomoyoshi Watakabe, Naoaki Kaneko, Kunihiro Tochiki, Kazuyuki Tsukimori, Akihito Otani
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2018, 140(3): 031801.
Paper No: PVT-17-1118
https://doi.org/10.1115/1.4039453
Published Online: April 10, 2018
View Articletitled, Study on Piping Seismic Response Under Multiple Excitation
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Topics: Excitation, Pipes, Piping systems, Stress
Proceedings Papers

Load Classification for Dynamic Responses on Single Mass Cantilever Structure With Bi-Linear Material Property

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Satoru Kai, Akihito Otani
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A026, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65099
https://doi.org/10.1115/PVP2017-65099
View Paper titled, Load Classification for Dynamic Responses on Single Mass Cantilever Structure With Bi-Linear Material Property
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Topics: Cantilevers, Dynamic response, Materials properties, Stress, Inertia (Mechanics), Deformation, Pipes, Design, Excitation, Nuclear power stations
Proceedings Papers

Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 1 — A Code Case for Piping Seismic Evaluation Based on Detailed Inelastic Response Analysis

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Masaki Morishita, Akihito Otani, Tomoyoshi Watakabe, Izumi Nakamura, Tadahiro Shibutani, Masaki Shiratori
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A001, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65166
https://doi.org/10.1115/PVP2017-65166
View Paper titled, Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 1 — A Code Case for Piping Seismic Evaluation Based on Detailed Inelastic Response Analysis
Open the PDF for Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 1 — A Code Case for Piping Seismic Evaluation Based on Detailed Inelastic Response Analysis in another window
Topics: Pipes, Piping systems, Fatigue, Damping, Earthquake resistant design, Inelastic analysis, Japan Society of Mechanical Engineers, Plasticity, Absorption, Design
Proceedings Papers

Seismic Qualification of Piping System by Detailed Inelastic Response Analysis: Part 2 — A Guideline for Piping Seismic Inelastic Response Analysis

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Akihito Otani, Tadahiro Shibutani, Masaki Morishita, Izumi Nakamura, Tomoyoshi Watakabe, Masaki Shiratori
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A002, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65190
https://doi.org/10.1115/PVP2017-65190
View Paper titled, Seismic Qualification of Piping System by Detailed Inelastic Response Analysis: Part 2 — A Guideline for Piping Seismic Inelastic Response Analysis
Open the PDF for Seismic Qualification of Piping System by Detailed Inelastic Response Analysis: Part 2 — A Guideline for Piping Seismic Inelastic Response Analysis in another window
Topics: Pipes, Piping systems, Earthquake resistant design, Fatigue, Damping, Design, Engineering standards, Japan Society of Mechanical Engineers, Materials properties, Modeling
Proceedings Papers

Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 3 — Variation in Elastic-Plastic Analysis Results on Carbon Steel Pipes From the Benchmark Analyses and the Parametric Analysis

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Izumi Nakamura, Akihito Otani, Masaki Morishita, Masaki Shiratori, Tomoyoshi Watakabe, Tadahiro Shibutani
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A003, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65316
https://doi.org/10.1115/PVP2017-65316
View Paper titled, Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 3 — Variation in Elastic-Plastic Analysis Results on Carbon Steel Pipes From the Benchmark Analyses and the Parametric Analysis
Open the PDF for Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 3 — Variation in Elastic-Plastic Analysis Results on Carbon Steel Pipes From the Benchmark Analyses and the Parametric Analysis in another window
Topics: Carbon steel, Pipes, Piping systems, Japan Society of Mechanical Engineers, Approximation, Design, Engineering standards, Failure, Finite element model, Inelastic analysis
Proceedings Papers

Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 4 — Second Round Benchmark Analyses With Stainless Steel Piping Component Test

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Tomoyoshi Watakabe, Izumi Nakamura, Akihito Otani, Masaki Morishita, Tadahiro Shibutani, Masaki Shiratori
Proc. ASME. PVP2017, Volume 8: Seismic Engineering, V008T08A004, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65324
https://doi.org/10.1115/PVP2017-65324
View Paper titled, Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 4 — Second Round Benchmark Analyses With Stainless Steel Piping Component Test
Open the PDF for Seismic Qualification of Piping Systems by Detailed Inelastic Response Analysis: Part 4 — Second Round Benchmark Analyses With Stainless Steel Piping Component Test in another window
Topics: Pipes, Piping systems, Stainless steel, Design, Carbon steel, Earthquake resistant design, Stress, Design methodology, Engineering standards, Failure