• Rev Assoc Med Bras (1992) · May 2020

    Musculoskeletal computational analysis on muscle mechanical characteristics of drivers' lumbar vertebras and legs in different sitting postures.

    • Fei Gao, Shi Zong, Zhi-Wu Han, Yang Xiao, and Zhen-Hai Gao.
    • State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, China.
    • Rev Assoc Med Bras (1992). 2020 May 1; 66 (5): 637-642.

    AbstractUsing computer-aided engineering (CAE) in the concept design stage of automobiles has become a hotspot in human factor engineering research. Based on human musculoskeletal biomechanical computational software, a seated human-body musculoskeletal model was built to describe the natural sitting posture of a driver. The interaction between the driver and car in various combinations of seat-pan/back-rest inclination angles was analyzed using an inverse-dynamics approach. In order to find out the "most comfortable" driving posture of the seat-pan/back-rest, the effect of seat-pan/back-rest inclination angles on the muscle activity degree, and the intradiscal L4-L5 compression force were investigated. The results showed that a much larger back-rest inclination angle, approximately 15°, and a slight backward seat-pan, about 7°, may relieve muscle fatigue and provide more comfort while driving. Subsequently, according to the findings above, a preliminary driving-comfort function was constructed.

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