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Comfort Assessment and Optimization Based on FE Simulation for High-Speed Train Seats: Comparison with Different Design Parameters

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  • Shufang Huang

    (School of Business, Hunan Industry Polytechnic, Changsha 410208, China)

  • Dayan Sun

    (School of Architectural Technology, Liuzhou Railway Vocational Technical College, Liuzhou 545616, China
    Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
    Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China)

  • Liang Zhang

    (Chongqing Key Laboratory of Vehicle Crash/Bio-Impact and Traffic Safety, Institute for Traffic Medicine, Daping Hospital, Army Medical University, Chongqing 400038, China)

  • Jiahao Zhou

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
    Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China)

  • Zhihui Wang

    (School of Business, Hunan Industry Polytechnic, Changsha 410208, China)

Abstract

Nowadays, riding comfort is more significant than before for evaluating the quality of high–speed railways and sitting is the most common posture for its passengers. This study aimed to analyze and optimize the pressure distribution and sitting comfort of second–class seats with different design parameters. Firstly, 21 pressure features were calculated after the field sitting tests conducted on a CRH Train. The subjective comfort was quantified as a linear combination of 6 pressure features in 21, which were selected using stepwise regression analysis ( R 2 = 0.684). A seat-human finite element model was established using THUMS for a human body and MAT_57 for the seat foam. Finally, this study analyzed the effects of foam and seat angles on interface pressure distribution and comfort ratings. The set of design parameters with the highest comfort was selected from 12 free combinations. The results show that the seat foam with less stiffness may not improve sitting comfort due to the asymmetry of the seat frame. Moreover, appropriately increasing the stiffness of the cushion and backrest will not lead to a decrease in subjective feelings and the pressure distribution becomes more reasonable as the inclination angle increases within 10 degrees. The final optimization increases the computational comfort of the seat-human model by 6.5 in a −50 to 50 scale.

Suggested Citation

  • Shufang Huang & Dayan Sun & Liang Zhang & Jiahao Zhou & Zhihui Wang, 2022. "Comfort Assessment and Optimization Based on FE Simulation for High-Speed Train Seats: Comparison with Different Design Parameters," Sustainability, MDPI, vol. 14(22), pages 1-19, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:15185-:d:974269
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    References listed on IDEAS

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    1. Long Wang & Hao Fan & Jianjie Chu & Dengkai Chen & Suihuai Yu, 2021. "Effect of Personal Space Invasion on Passenger Comfort and Comfort Design of an Aircraft Cabin," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-15, June.
    2. Weitan Yin & Juyue Ding & Yi Qiu, 2021. "Nonlinear Dynamic Modelling of a Suspension Seat for Predicting the Vertical Seat Transmissibility," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-10, December.
    3. Corina Nüesch & Jan-Niklas Kreppke & Annegret Mündermann & Lars Donath, 2018. "Effects of a Dynamic Chair on Chair Seat Motion and Trunk Muscle Activity during Office Tasks and Task Transitions," IJERPH, MDPI, vol. 15(12), pages 1-11, December.
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