Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length
A tethered system, which is a multibody system in which multiple rigid bodies are connected via a flexible tether, is currently used for space and deep-sea exploration. In order to perform accurate work with such tethered systems, the ability to comprehend tether dynamics behavior with large deforma...
| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2021-07-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/87/900/87_21-00071/_pdf/-char/en |
| _version_ | 1798018685786390528 |
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| author | Riko OGAWARA Yoshiaki TERUMICHI |
| author_facet | Riko OGAWARA Yoshiaki TERUMICHI |
| author_sort | Riko OGAWARA |
| collection | DOAJ |
| description | A tethered system, which is a multibody system in which multiple rigid bodies are connected via a flexible tether, is currently used for space and deep-sea exploration. In order to perform accurate work with such tethered systems, the ability to comprehend tether dynamics behavior with large deformation/displacement and time-varying length is crucial. Numerical analyses are beneficial in that it is difficult to carry out experiments in such environment. In this paper, an efficient numerical approach is proposed for a flexible body motion with time-varying length using a dimensionless equation of motion. Generally Absolute Nodal Coordinate Formulation (ANCF), which is a nonlinear finite element method is effective for dynamic simulation of a flexible body motion. VFE-ANCF, which applies variable-domain finite element (VFE) as a method of expressing time-varying length to ANCF, was proposed to represent the motion of a flexible body with large deformation, displacement and time-varying length. However, conventional approach using VFE-ANCF has a problem that the accuracy changes depending on the length change. So in this paper, to avoid this problem, dimensionless variables are introduced using representative value that changes with time-varying length. In addition, the usefulness of this method is shown by comparing the numerical results using this method and the conventional method. |
| first_indexed | 2024-04-11T16:28:28Z |
| format | Article |
| id | doaj.art-bddecad3d93d438ca4d1844dcfaf6884 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:28:28Z |
| publishDate | 2021-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-bddecad3d93d438ca4d1844dcfaf68842022-12-22T04:14:07ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612021-07-018790021-0007121-0007110.1299/transjsme.21-00071transjsmeDimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying lengthRiko OGAWARA0Yoshiaki TERUMICHI1Division of Mechanical Engineering, Sophia UniversityDepartment of Engineering and Applied Science, Sophia UniversityA tethered system, which is a multibody system in which multiple rigid bodies are connected via a flexible tether, is currently used for space and deep-sea exploration. In order to perform accurate work with such tethered systems, the ability to comprehend tether dynamics behavior with large deformation/displacement and time-varying length is crucial. Numerical analyses are beneficial in that it is difficult to carry out experiments in such environment. In this paper, an efficient numerical approach is proposed for a flexible body motion with time-varying length using a dimensionless equation of motion. Generally Absolute Nodal Coordinate Formulation (ANCF), which is a nonlinear finite element method is effective for dynamic simulation of a flexible body motion. VFE-ANCF, which applies variable-domain finite element (VFE) as a method of expressing time-varying length to ANCF, was proposed to represent the motion of a flexible body with large deformation, displacement and time-varying length. However, conventional approach using VFE-ANCF has a problem that the accuracy changes depending on the length change. So in this paper, to avoid this problem, dimensionless variables are introduced using representative value that changes with time-varying length. In addition, the usefulness of this method is shown by comparing the numerical results using this method and the conventional method.https://www.jstage.jst.go.jp/article/transjsme/87/900/87_21-00071/_pdf/-char/enmultibody dynamicsflexible bodytime-varying lengthnon-dimensionized-modeling |
| spellingShingle | Riko OGAWARA Yoshiaki TERUMICHI Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length Nihon Kikai Gakkai ronbunshu multibody dynamics flexible body time-varying length non-dimensionized-modeling |
| title | Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length |
| title_full | Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length |
| title_fullStr | Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length |
| title_full_unstemmed | Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length |
| title_short | Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length |
| title_sort | dimensionless numerical analysis method for flexible body with large deformation displacement and time varying length |
| topic | multibody dynamics flexible body time-varying length non-dimensionized-modeling |
| url | https://www.jstage.jst.go.jp/article/transjsme/87/900/87_21-00071/_pdf/-char/en |
| work_keys_str_mv | AT rikoogawara dimensionlessnumericalanalysismethodforflexiblebodywithlargedeformationdisplacementandtimevaryinglength AT yoshiakiterumichi dimensionlessnumericalanalysismethodforflexiblebodywithlargedeformationdisplacementandtimevaryinglength |