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Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems

Matt Bonney Orcid Logo, Maxime Zabiégo

Journal of Vibration and Acoustics, Volume: 142, Issue: 5

Swansea University Author: Matt Bonney Orcid Logo

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DOI (Published version): 10.1115/1.4046955

Abstract

The reactivity control system is a vital safety system for a nuclear reactor. One of the most challenging aspects in the design of these systems is the operation during critical situations, in particular during earthquakes to safely shut-down the reactor. To study these situations, the toolbox pytho...

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Published in: Journal of Vibration and Acoustics
ISSN: 1048-9002 1528-8927
Published: ASME International 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa65037
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spelling v2 65037 2023-11-21 Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems 323110cf11dcec3e8183228a4b33e06d 0000-0002-1499-0848 Matt Bonney Matt Bonney true false 2023-11-21 AERO The reactivity control system is a vital safety system for a nuclear reactor. One of the most challenging aspects in the design of these systems is the operation during critical situations, in particular during earthquakes to safely shut-down the reactor. To study these situations, the toolbox python Implementation for Reliability Assessment Tools (PIRAT) is used to model two types of excitation: single frequency and realistic. The main focus of this work is the comparison of the implementation of the contact models used to describe the interaction between the subsystems. For the dynamic tool in PIRAT (dynamic Euler–Bernoulli for seismic event (DEBSE)), this is done with a two-stage linear spring or Lankarani and Nikravesh-based models. For the sine excitation, the results show four distinct response types with the maximum displacement varying between the models. Low-frequency excitation showed little variance while higher frequency excitation showed large variations. The realistic excitation, however, did not show these variations and showed nearly identical results for the contact models tested. This gives confidence in the simulations since the user selected contact model did not greatly affect the simulation results for a realistic excitation. Journal Article Journal of Vibration and Acoustics 142 5 ASME International 1048-9002 1528-8927 Dynamics, modal analysis, non-linear vibration 31 10 2020 2020-10-31 10.1115/1.4046955 http://dx.doi.org/10.1115/1.4046955 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2024-01-02T16:07:19.4111368 2023-11-21T09:33:21.8852573 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Matt Bonney 0000-0002-1499-0848 1 Maxime Zabiégo 2
title Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
spellingShingle Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
Matt Bonney
title_short Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
title_full Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
title_fullStr Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
title_full_unstemmed Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
title_sort Implementation and Comparison of Contact Models Within PIRAT for Nuclear Reactivity Control Systems
author_id_str_mv 323110cf11dcec3e8183228a4b33e06d
author_id_fullname_str_mv 323110cf11dcec3e8183228a4b33e06d_***_Matt Bonney
author Matt Bonney
author2 Matt Bonney
Maxime Zabiégo
format Journal article
container_title Journal of Vibration and Acoustics
container_volume 142
container_issue 5
publishDate 2020
institution Swansea University
issn 1048-9002
1528-8927
doi_str_mv 10.1115/1.4046955
publisher ASME International
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
url http://dx.doi.org/10.1115/1.4046955
document_store_str 0
active_str 0
description The reactivity control system is a vital safety system for a nuclear reactor. One of the most challenging aspects in the design of these systems is the operation during critical situations, in particular during earthquakes to safely shut-down the reactor. To study these situations, the toolbox python Implementation for Reliability Assessment Tools (PIRAT) is used to model two types of excitation: single frequency and realistic. The main focus of this work is the comparison of the implementation of the contact models used to describe the interaction between the subsystems. For the dynamic tool in PIRAT (dynamic Euler–Bernoulli for seismic event (DEBSE)), this is done with a two-stage linear spring or Lankarani and Nikravesh-based models. For the sine excitation, the results show four distinct response types with the maximum displacement varying between the models. Low-frequency excitation showed little variance while higher frequency excitation showed large variations. The realistic excitation, however, did not show these variations and showed nearly identical results for the contact models tested. This gives confidence in the simulations since the user selected contact model did not greatly affect the simulation results for a realistic excitation.
published_date 2020-10-31T16:07:20Z
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score 11.012678

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