噪声与振动控制2017，Vol.37Issue(3)：7-13,57,8.DOI:10.3969/j.issn.1006-1355.2017.03.002
中高频大振幅垂向振动下的坐姿人体7自由度建模及实验
7-DOF Modelling and Testing of Seating Human Bodies for Prediction of Responses to Large Magnitude Vertical Vibration at High Frequencies
摘要
Abstract
In order to control the interior vibration of buildings and vehicles, a proper model of human bodies needs to be developed to predict their dynamic responses under different conditions. So far, most of the previous studies are concentrated on the biodynamic responses to the vibration at relatively low frequencies (<20 Hz) and small magnitudes (acceleration<1.5 ms-2), which may not be suitable for prediction of the human body responses to vibration at relatively high frequencies (>20 Hz) and large magnitudes (acceleration>1.5 ms-2). The present study proposes a modified 7 degrees-of-freedom (DOF) model to predict the biodynamic response of the seating human bodies to the vertical vibration at relatively high frequencies and large magnitudes. An experiment is conducted to measure the apparent mass of the seating human bodies on 25 volunteers (13 males and 12 females) with random vertical vibration at 2 Hz-100 Hz and four different acceleration magnitudes (1.0 m/s2, 1.5 m/s2, 2.0 m/s2 and 2.5 m/s2). The experimental data are compared with the prediction data to identify the parameters of the 7-DOF model. The results show that the modified 7-DOF model can predict the dynamic response of the seating human bodies to the vertical vibration at frequencies higher than 20 Hz and magnitudes larger than 1.0 m/s2 more accurately than the 3-DOF model suggested in the international standard.关键词
振动与波/人体/垂向振动/生物动力学/视在质量Key words
vibration and wave/human body/vertical vibration/biodynamic/apparent mass分类
机械制造引用本文复制引用
梁世豪,黄煜..中高频大振幅垂向振动下的坐姿人体7自由度建模及实验[J].噪声与振动控制,2017,37(3):7-13,57,8.基金项目
国家自然科学基金资助项目(11402147) （11402147）
