Ride Comfort Enhancement and Vibration Response Analysis of a Coupled 52-DoF Human-Rail Vehicle Model under Random Excitation.
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| Title: | Ride Comfort Enhancement and Vibration Response Analysis of a Coupled 52-DoF Human-Rail Vehicle Model under Random Excitation. |
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| Authors: | Doddi, Ramajogi Naidu1,2 jogi329@gmail.com, Koona, Ramji1 |
| Source: | International Journal of Vehicle Structures & Systems (IJVSS). 2025, Vol. 17 Issue 6, p941-948. 8p. |
| Subjects: | Degrees of freedom, Human comfort, Motor vehicle dynamics, Chaos theory, Parametric modeling, Mechanical vibration research, Standards |
| Abstract: | This research introduces a comprehensive vibratory model of a human-rail vehicle system with 52 degrees of freedom (DoF), combining a 15-DoF human body model with a 37-DoF rail vehicle framework. The model is crafted to replicate how passengers react dynamically to random stimuli across a frequency range of 0-80 Hz, with a specific focus on the 4-6 Hz resonance band, which is linked to discomfort in the human body. Using the Lagrangian formulation, equations of motion were derived and solved in MATLAB to determine natural frequencies, vibration transmissibility and root mean square (RMS) accelerations of human body segments. Ride comfort evaluations were performed based on ISO 2631-1:1997 whole-body vibration standards. A parametric study was conducted to assess the effects of variations in mass, stiffness and damping properties on passenger comfort. Results indicate that strategic modifications to model parameters achieved up to an 89% improvement in comfort for critical body regions such as the head and torso. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Vehicle Structures & Systems (IJVSS) is the property of Carbon Magics Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 191002270 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Ride Comfort Enhancement and Vibration Response Analysis of a Coupled 52-DoF Human-Rail Vehicle Model under Random Excitation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Doddi%2C+Ramajogi+Naidu%22">Doddi, Ramajogi Naidu</searchLink><relatesTo>1,2</relatesTo><i> jogi329@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Koona%2C+Ramji%22">Koona, Ramji</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Vehicle+Structures+%26+Systems+%28IJVSS%29%22">International Journal of Vehicle Structures & Systems (IJVSS)</searchLink>. 2025, Vol. 17 Issue 6, p941-948. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Degrees+of+freedom%22">Degrees of freedom</searchLink><br /><searchLink fieldCode="DE" term="%22Human+comfort%22">Human comfort</searchLink><br /><searchLink fieldCode="DE" term="%22Motor+vehicle+dynamics%22">Motor vehicle dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Chaos+theory%22">Chaos theory</searchLink><br /><searchLink fieldCode="DE" term="%22Parametric+modeling%22">Parametric modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+vibration+research%22">Mechanical vibration research</searchLink><br /><searchLink fieldCode="DE" term="%22Standards%22">Standards</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This research introduces a comprehensive vibratory model of a human-rail vehicle system with 52 degrees of freedom (DoF), combining a 15-DoF human body model with a 37-DoF rail vehicle framework. The model is crafted to replicate how passengers react dynamically to random stimuli across a frequency range of 0-80 Hz, with a specific focus on the 4-6 Hz resonance band, which is linked to discomfort in the human body. Using the Lagrangian formulation, equations of motion were derived and solved in MATLAB to determine natural frequencies, vibration transmissibility and root mean square (RMS) accelerations of human body segments. Ride comfort evaluations were performed based on ISO 2631-1:1997 whole-body vibration standards. A parametric study was conducted to assess the effects of variations in mass, stiffness and damping properties on passenger comfort. Results indicate that strategic modifications to model parameters achieved up to an 89% improvement in comfort for critical body regions such as the head and torso. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Vehicle Structures & Systems (IJVSS) is the property of Carbon Magics Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=191002270 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.4273/ijvss.17.6.03 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 941 Subjects: – SubjectFull: Degrees of freedom Type: general – SubjectFull: Human comfort Type: general – SubjectFull: Motor vehicle dynamics Type: general – SubjectFull: Chaos theory Type: general – SubjectFull: Parametric modeling Type: general – SubjectFull: Mechanical vibration research Type: general – SubjectFull: Standards Type: general Titles: – TitleFull: Ride Comfort Enhancement and Vibration Response Analysis of a Coupled 52-DoF Human-Rail Vehicle Model under Random Excitation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Doddi, Ramajogi Naidu – PersonEntity: Name: NameFull: Koona, Ramji IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 09753060 Numbering: – Type: volume Value: 17 – Type: issue Value: 6 Titles: – TitleFull: International Journal of Vehicle Structures & Systems (IJVSS) Type: main |
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