中文摘要：

为准确模拟高速列车运行过程中人体振动情况,针对既有研究对人体各部位进行单独分析时自由度较少的限制,提出了人体坐姿九自由度垂向振动动力学模型,利用样条插值对实验值数据进行扩充并依据最小二乘原理对模型参数进行辨识,同时对模型进行振动响应分析。结果表明：考虑上下肢振动的九自由度人体垂向振动模型具有较高的准确度;人体振动情况与车体有较大差异;在相同的激励作用下,人体不同部位振动响应差异也较大,为高速列车乘坐舒适性的提高提供了相关理论参考。

英文摘要：

To accurately simulate the human suffered vibration during the process of high-speed trains running,it proposed nine degree of freedom（DOF）dynamics model of seated human body exposed to vertical vibration considering the limitation of less degree of the existing studies while analyzing the vibration characteristic of the human body separately. Solved the restriction of the seat to human head transfer function（STH）experimental data quantity by spline interpolation,obtained the model parameters by parameter identification based on the principle of least squares. Results show： the nine DOF model which considering the upper and lower limbs vibration has the highest model accuracy;human body＇s vibration and vibration from the vehicle body have a big difference,the vibration response differences among different parts of the human in same incentives are also large,this can provide theoretical references to the improvement of ride comfort of high speed train.