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Biomechanical load analysis of seated human body incorporating body pressure distribution
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Maochang QIU1, Rongzhi DING1, Zhifei ZHANG1, 2, Kanlun TAN2, 3, Li YANG2, 3, Le BAI2, 3
Journal of Vibration Engineering | 2025, 38(10) : 2247 - 2254
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Journal of Vibration Engineering | 2025, 38(10): 2247-2254
Biomechanical load analysis of seated human body incorporating body pressure distribution
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Maochang QIU1, Rongzhi DING1, Zhifei ZHANG1, 2, Kanlun TAN2, 3, Li YANG2, 3, Le BAI2, 3
Affiliations
  • 1.College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400300, China
  • 2.State Key Laboratory of Intelligent Vehicle Safety Technology, Chongqing 401133, China
  • 3.Chongqing Changan Automobile Co., Ltd., Chongqing 400023, China
doi: 10.16385/j.cnki.issn.1004-4523.202312025
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In order to explore the correlation between seated body pressure distribution and biomechanical loading, a setup scheme for the human-chair contact surface for human biomechanical modelling is proposed using body pressure information as a guide. The contact between the human body and the seat is simulated by a certain number of contact points, and based on the experimental body pressure distribution data, the relative contact strength is set as the relative magnitude of the average pressure in each partition of the body pressure cloud map. Through comparison, it is discovered that the average contact strength is set between 200~600, which can improve the solution accuracy and take into account the real muscle activation effect. At the same time, the scheme of different numbers of contact points was discussed, and it is more reasonable to choose to set 8 contact points in a comprehensive view. After comparing with the experimental data in the literature, it is shown that the contact scheme based on the body pressure distribution of the human chair biomechanical model can accurately reflect the muscle activation, joint force and other biomechanical indicators. Muscle activation and joint forces under hardwood planks and foam cushions were compared based on a contact scenario setup, explaining the reasons for more comfortable foam seating from a biomechanical point of view.

musculoskeletal model  /  body pressure distribution  /  seat comfort  /  muscle activation
Maochang QIU, Rongzhi DING, Zhifei ZHANG, Kanlun TAN, Li YANG, Le BAI. Biomechanical load analysis of seated human body incorporating body pressure distribution[J]. Journal of Vibration Engineering, 2025 , 38 (10) : 2247 -2254 . DOI: 10.16385/j.cnki.issn.1004-4523.202312025
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Year 2025 volume 38 Issue 10
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.202312025
  • Receive Date：2023-12-10
  • Online Date：2026-02-04
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  • Received：2023-12-10
  • Revised：2024-02-02
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Affiliations
    1.College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400300, China
    2.State Key Laboratory of Intelligent Vehicle Safety Technology, Chongqing 401133, China
    3.Chongqing Changan Automobile Co., Ltd., Chongqing 400023, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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