Finite element modelling and biodynamic response prediction of the seated human body exposed to whole-body vibration

全身振动 传递率(结构动力学) 腰椎 腰椎 振动 有限元法 生物力学 物理医学与康复 结构工程 医学 工程类 解剖 外科 隔振 物理 声学
作者
Kaizhan Gao,Zhifei Zhang,Hongwei Lu,Zhongming Xu,Yansong He
出处
期刊:Ergonomics [Taylor & Francis]
卷期号:66 (12): 1854-1867 被引量:4
标识
DOI:10.1080/00140139.2023.2168064
摘要

Biodynamic modelling of seat-occupant systems can assist in seat comfort design. A finite element (FE) model of the seated human body, including detailed modelling of the lumbar spine, was established to reflect the human response to vibration and biodynamic response of the lumbar spine under whole-body vibration (WBV). The lumbar spine model was established and validated against the in-vitro results and calculated data. The posture of the lumbar spine was adjusted according to the radiological research results, and the adjusted model was combined to establish a FE model of the seated human body. The present seated human model with backrest inclination angles of 10, 20, and 30°, validated by comparing the measured apparent mass and seat-to-lumbar spine transmissibility, was used to calculate the biodynamic response of the lumbar spine with three inclined backrests under WBV. The results showed that the model could characterise the apparent mass, seat-to-lumbar spine transmissibility, and the biodynamic response of the lumbar spine. Practitioner summary: Biodynamic models can represent dynamic characteristics of the human body exposed to vibration and assist in seat comfort design. The three-dimensional FE model of the human body can be used to explore the human response to vibration and the biodynamic response of the lumbar spine under WBV.
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