Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device
Objectives. The patient rehabilitation transfer device is a typical personnel transfer equipment, which is mainly composed of outriggers, support arm, lifting arms, hooks, handrails, hydraulic cylinders, and other components. The existing research on the device is mainly focused on the configuration...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Applied Bionics and Biomechanics |
| Online Access: | http://dx.doi.org/10.1155/2022/6610753 |
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| author | Wu Ren Kailu Zhang Xueling Zhang Ziya Zhao Fei Lin Kai Xie Jia Li Yi Yu |
| author_facet | Wu Ren Kailu Zhang Xueling Zhang Ziya Zhao Fei Lin Kai Xie Jia Li Yi Yu |
| author_sort | Wu Ren |
| collection | DOAJ |
| description | Objectives. The patient rehabilitation transfer device is a typical personnel transfer equipment, which is mainly composed of outriggers, support arm, lifting arms, hooks, handrails, hydraulic cylinders, and other components. The existing research on the device is mainly focused on the configuration design and transfer mode, and the research on its dynamic characteristics during the transfer process has not been thoroughly discussed. Methodology. Based on the existing research, a portable hydraulic rehabilitation patient transfer device has been developed. Then the multi-rigid body dynamic and finite element flexible body models were established. Next, the dynamic characteristic difference between the two models of the device was studied. Results. As shown in the results, the finite element multi-flexible body model has obvious flexible vibration in the lifting stage, and the amplitude reaches 16 mm in the motion startup stage due to the influence of rigid-flexible coupling. The tip acceleration of the flexible body model was also influenced by the vibration, and the maximum acceleration value reaches 0.06 m/s2. According to the test results, the maximum acceleration of the terminal reaches 0.05 m/s2, which is close to the finite-element multi-flexible model simulation results. The experimentally measured natural frequency of the device is 3.1 Hz, which is also close to 3.2 Hz calculated by the simulation. Because the flexible component in the flexible model is only the lift arm, the natural frequency is slightly larger than the experimental value. Conclusion. According to the stress value of the finite element multi-body model motion process, the maximum stress appears at the moment when the motion reaches the top end, and the instantaneous stress reaches 206 Mpa, which is in line with the allowable stress range of the material design. The data obtained in this study will provide help for the follow-up clinical rehabilitation and intelligent device research. |
| format | Article |
| id | doaj-art-46510890954c48699dfe89c6a3754cc7 |
| institution | Kabale University |
| issn | 1754-2103 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Bionics and Biomechanics |
| spelling | doaj-art-46510890954c48699dfe89c6a3754cc72025-02-03T06:08:42ZengWileyApplied Bionics and Biomechanics1754-21032022-01-01202210.1155/2022/6610753Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer DeviceWu Ren0Kailu Zhang1Xueling Zhang2Ziya Zhao3Fei Lin4Kai Xie5Jia Li6Yi Yu7Xinxiang Medical UniversityXinxiang Medical UniversityXinxiang Medical UniversityXinxiang Medical UniversityThe First Affiliated Hospital of Xinxiang Medical UniversityXinxiang Medical UniversityXinxiang Medical UniversityXinxiang Medical UniversityObjectives. The patient rehabilitation transfer device is a typical personnel transfer equipment, which is mainly composed of outriggers, support arm, lifting arms, hooks, handrails, hydraulic cylinders, and other components. The existing research on the device is mainly focused on the configuration design and transfer mode, and the research on its dynamic characteristics during the transfer process has not been thoroughly discussed. Methodology. Based on the existing research, a portable hydraulic rehabilitation patient transfer device has been developed. Then the multi-rigid body dynamic and finite element flexible body models were established. Next, the dynamic characteristic difference between the two models of the device was studied. Results. As shown in the results, the finite element multi-flexible body model has obvious flexible vibration in the lifting stage, and the amplitude reaches 16 mm in the motion startup stage due to the influence of rigid-flexible coupling. The tip acceleration of the flexible body model was also influenced by the vibration, and the maximum acceleration value reaches 0.06 m/s2. According to the test results, the maximum acceleration of the terminal reaches 0.05 m/s2, which is close to the finite-element multi-flexible model simulation results. The experimentally measured natural frequency of the device is 3.1 Hz, which is also close to 3.2 Hz calculated by the simulation. Because the flexible component in the flexible model is only the lift arm, the natural frequency is slightly larger than the experimental value. Conclusion. According to the stress value of the finite element multi-body model motion process, the maximum stress appears at the moment when the motion reaches the top end, and the instantaneous stress reaches 206 Mpa, which is in line with the allowable stress range of the material design. The data obtained in this study will provide help for the follow-up clinical rehabilitation and intelligent device research.http://dx.doi.org/10.1155/2022/6610753 |
| spellingShingle | Wu Ren Kailu Zhang Xueling Zhang Ziya Zhao Fei Lin Kai Xie Jia Li Yi Yu Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device Applied Bionics and Biomechanics |
| title | Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device |
| title_full | Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device |
| title_fullStr | Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device |
| title_full_unstemmed | Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device |
| title_short | Multi-Flexible Body Dynamics Modeling and Experimental Study of the Patient Rehabilitation Transfer Device |
| title_sort | multi flexible body dynamics modeling and experimental study of the patient rehabilitation transfer device |
| url | http://dx.doi.org/10.1155/2022/6610753 |
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