MBD analysis of flexible multibody system with mass loss
In this paper, we propose a formulation method for flexible multi-body systems with mass loss. The method derives the equation of motion using the velocity transformation method, in consideration of the shift of center-of-mass. There are three research purposes in this paper. The first purpose is to...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2016-01-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/82/834/82_15-00504/_pdf/-char/en |
| _version_ | 1811221187811868672 |
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| author | Kanjuro MAKIHARA Takashi KIKKAWA Yoshiki SUGAWARA |
| author_facet | Kanjuro MAKIHARA Takashi KIKKAWA Yoshiki SUGAWARA |
| author_sort | Kanjuro MAKIHARA |
| collection | DOAJ |
| description | In this paper, we propose a formulation method for flexible multi-body systems with mass loss. The method derives the equation of motion using the velocity transformation method, in consideration of the shift of center-of-mass. There are three research purposes in this paper. The first purpose is to extend the velocity transformation method for describing flexible bodies. Conventional velocity transformation method has only focused on the dynamics of rigid bodies. The restoring force due to flexibility is introduced to the equation of motion as generalized external force. Our proposed method can deal with rigid, elastic, or geometric connections, such as hinge and sliding joints. The second purpose is to formulate flexible multi-body systems with mass loss. Conventional Kane's technique only deals with the dynamics of particles. On the other hand, the proposed method can express the dynamics for the mixed model of particles and rigid bodies, where particle elements express the mass change of the system. The third purpose is to verify the high usefulness of our method for the dynamics simulation of a flying rocket. The rocket is a representative multi-body system whose mass varies. We analyze the flight characteristics, such as pitch angle, for rocket models associated with the variation in stiffness. The simulation indicates that the mass loss greatly affects the dynamics of rockets. The calculation demonstrates a large difference in the flight dynamics between rigid and flexible models. |
| first_indexed | 2024-04-12T07:55:00Z |
| format | Article |
| id | doaj.art-e9116b600a5f4081873237ef5048a064 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-12T07:55:00Z |
| publishDate | 2016-01-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-e9116b600a5f4081873237ef5048a0642022-12-22T03:41:30ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612016-01-018283415-0050415-0050410.1299/transjsme.15-00504transjsmeMBD analysis of flexible multibody system with mass lossKanjuro MAKIHARA0Takashi KIKKAWA1Yoshiki SUGAWARA2Department of Aerospace Engineering, Tohoku UniversityDepartment of Aerospace Engineering, Tohoku UniversityDepartment of Mechanical Engineering, Akita UniversityIn this paper, we propose a formulation method for flexible multi-body systems with mass loss. The method derives the equation of motion using the velocity transformation method, in consideration of the shift of center-of-mass. There are three research purposes in this paper. The first purpose is to extend the velocity transformation method for describing flexible bodies. Conventional velocity transformation method has only focused on the dynamics of rigid bodies. The restoring force due to flexibility is introduced to the equation of motion as generalized external force. Our proposed method can deal with rigid, elastic, or geometric connections, such as hinge and sliding joints. The second purpose is to formulate flexible multi-body systems with mass loss. Conventional Kane's technique only deals with the dynamics of particles. On the other hand, the proposed method can express the dynamics for the mixed model of particles and rigid bodies, where particle elements express the mass change of the system. The third purpose is to verify the high usefulness of our method for the dynamics simulation of a flying rocket. The rocket is a representative multi-body system whose mass varies. We analyze the flight characteristics, such as pitch angle, for rocket models associated with the variation in stiffness. The simulation indicates that the mass loss greatly affects the dynamics of rockets. The calculation demonstrates a large difference in the flight dynamics between rigid and flexible models.https://www.jstage.jst.go.jp/article/transjsme/82/834/82_15-00504/_pdf/-char/enmultibody dynamicsflexible bodymass lossvelocity transformationrocket |
| spellingShingle | Kanjuro MAKIHARA Takashi KIKKAWA Yoshiki SUGAWARA MBD analysis of flexible multibody system with mass loss Nihon Kikai Gakkai ronbunshu multibody dynamics flexible body mass loss velocity transformation rocket |
| title | MBD analysis of flexible multibody system with mass loss |
| title_full | MBD analysis of flexible multibody system with mass loss |
| title_fullStr | MBD analysis of flexible multibody system with mass loss |
| title_full_unstemmed | MBD analysis of flexible multibody system with mass loss |
| title_short | MBD analysis of flexible multibody system with mass loss |
| title_sort | mbd analysis of flexible multibody system with mass loss |
| topic | multibody dynamics flexible body mass loss velocity transformation rocket |
| url | https://www.jstage.jst.go.jp/article/transjsme/82/834/82_15-00504/_pdf/-char/en |
| work_keys_str_mv | AT kanjuromakihara mbdanalysisofflexiblemultibodysystemwithmassloss AT takashikikkawa mbdanalysisofflexiblemultibodysystemwithmassloss AT yoshikisugawara mbdanalysisofflexiblemultibodysystemwithmassloss |