Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions
Within 30 Hz, the discomfort caused by whole-body vibration in rotational direction is higher than vertical vibration at similar equivalent magnitude. Roll vibration, in particular, produces greater discomfort comparing with pitch and yaw vibrations. It is critical to understand the biodynamic chara...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8839363 |
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| _version_ | 1850157819582480384 |
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| author | Zefeng Lin Junhong Zhang Jinlu Li Weitan Yin Chi Liu Jiewei Lin |
| author_facet | Zefeng Lin Junhong Zhang Jinlu Li Weitan Yin Chi Liu Jiewei Lin |
| author_sort | Zefeng Lin |
| collection | DOAJ |
| description | Within 30 Hz, the discomfort caused by whole-body vibration in rotational direction is higher than vertical vibration at similar equivalent magnitude. Roll vibration, in particular, produces greater discomfort comparing with pitch and yaw vibrations. It is critical to understand the biodynamic characteristics of seated human body under roll vibration for both comfort assessment and vibration control. Experiments are carried out to obtain the biodynamic response of seated human body under random roll vibrations at four r.m.s. magnitude levels. It is found that the principal resonance in the roll apparent inertia is about 1 Hz, but varied from 0.7 to 1.5 Hz depending on the magnitude of vibration (0.5 to 2.0 rad/s2), and the secondary resonance locates around 3 Hz with a much lower modulus. It is noted that the human response to roll vibration has some features in common with that in the lateral direction. Two lumped parameter models are developed and calibrated to study the correlation between the two excitation axials. The equivalent relationships of magnitude and phase between roll and lateral vibrations are obtained on condition that they produce similar rotational responses of the upper human body. It suggests an equivalence approach between translational and rotational vibrations that can benefit the comfort assessment when exposed to multiaxial excitations. |
| format | Article |
| id | doaj-art-6d0cd261d69a42aa8fef0e545355f24a |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-6d0cd261d69a42aa8fef0e545355f24a2025-08-20T02:24:03ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88393638839363Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral DirectionsZefeng Lin0Junhong Zhang1Jinlu Li2Weitan Yin3Chi Liu4Jiewei Lin5School of Mechanical Engineering, Tianjin University, Tianjin, ChinaSchool of Mechanical Engineering, Tianjin University, Tianjin, ChinaSchool of Mechanical Engineering, Tianjin University, Tianjin, ChinaInstitute of Sound and Vibration Research, University of Southampton, Southampton, UKInstitute of Sound and Vibration Research, University of Southampton, Southampton, UKSchool of Mechanical Engineering, Tianjin University, Tianjin, ChinaWithin 30 Hz, the discomfort caused by whole-body vibration in rotational direction is higher than vertical vibration at similar equivalent magnitude. Roll vibration, in particular, produces greater discomfort comparing with pitch and yaw vibrations. It is critical to understand the biodynamic characteristics of seated human body under roll vibration for both comfort assessment and vibration control. Experiments are carried out to obtain the biodynamic response of seated human body under random roll vibrations at four r.m.s. magnitude levels. It is found that the principal resonance in the roll apparent inertia is about 1 Hz, but varied from 0.7 to 1.5 Hz depending on the magnitude of vibration (0.5 to 2.0 rad/s2), and the secondary resonance locates around 3 Hz with a much lower modulus. It is noted that the human response to roll vibration has some features in common with that in the lateral direction. Two lumped parameter models are developed and calibrated to study the correlation between the two excitation axials. The equivalent relationships of magnitude and phase between roll and lateral vibrations are obtained on condition that they produce similar rotational responses of the upper human body. It suggests an equivalence approach between translational and rotational vibrations that can benefit the comfort assessment when exposed to multiaxial excitations.http://dx.doi.org/10.1155/2020/8839363 |
| spellingShingle | Zefeng Lin Junhong Zhang Jinlu Li Weitan Yin Chi Liu Jiewei Lin Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions Shock and Vibration |
| title | Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions |
| title_full | Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions |
| title_fullStr | Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions |
| title_full_unstemmed | Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions |
| title_short | Biodynamic Response of Seated Human Body to Roll Vibration and Correlation between Roll and Lateral Directions |
| title_sort | biodynamic response of seated human body to roll vibration and correlation between roll and lateral directions |
| url | http://dx.doi.org/10.1155/2020/8839363 |
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