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Dynamic response of reinforced soft tubes: A numerical and experimental investigation.

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Title: Dynamic response of reinforced soft tubes: A numerical and experimental investigation.
Authors: Fu, Chen1 (AUTHOR), Quan, Lingxiao1 (AUTHOR), Geng, Yuheng1 (AUTHOR), Gao, Jing1 (AUTHOR), Guo, Changhong1 (AUTHOR) guochanghong@ysu.edu.cn
Source: Journal of Mechanical Science & Technology. Jul2025, Vol. 39 Issue 7, p3883-3896. 14p.
Subjects: Civil engineering, Random vibration, Engineering models, Finite element method, Steel wire
Abstract: Steel wire braiding reinforced polytetrafluoroethylene (PTFE) soft tubes are critical in aircraft piping systems, where their vibration and dynamic responses are essential for ensuring system reliability and safety. To investigate their dynamic performance, a high-precision finite element model was established combining material parameters from stress relaxation experiments. Modal and random vibration analyses were performed to determine the natural frequencies, stress, and velocity responses of the reinforced soft tubes. Thermal-mechanical coupling was also incorporated to simulate real operational conditions by considering ambient temperature effects. The results indicate that structural response is dominated by fundamental frequency resonance. As temperature increases, the natural frequency rises while the peak velocity response at the fundamental frequency decreases. The error between constrained mode frequencies and experimental values is below 5.44 %, validating the accuracy of model. These findings provide valuable insights for the design and analysis of reinforced soft tubes under dynamic loads. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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
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  Data: <searchLink fieldCode="DE" term="%22Civil+engineering%22">Civil engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Random+vibration%22">Random vibration</searchLink><br /><searchLink fieldCode="DE" term="%22Engineering+models%22">Engineering models</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+wire%22">Steel wire</searchLink>
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  Data: Steel wire braiding reinforced polytetrafluoroethylene (PTFE) soft tubes are critical in aircraft piping systems, where their vibration and dynamic responses are essential for ensuring system reliability and safety. To investigate their dynamic performance, a high-precision finite element model was established combining material parameters from stress relaxation experiments. Modal and random vibration analyses were performed to determine the natural frequencies, stress, and velocity responses of the reinforced soft tubes. Thermal-mechanical coupling was also incorporated to simulate real operational conditions by considering ambient temperature effects. The results indicate that structural response is dominated by fundamental frequency resonance. As temperature increases, the natural frequency rises while the peak velocity response at the fundamental frequency decreases. The error between constrained mode frequencies and experimental values is below 5.44 %, validating the accuracy of model. These findings provide valuable insights for the design and analysis of reinforced soft tubes under dynamic loads. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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.)
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        Value: 10.1007/s12206-025-0612-8
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        Text: English
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      – SubjectFull: Engineering models
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              M: 07
              Text: Jul2025
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              Y: 2025
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