面向振动响应特性的坐姿人体动力学模型

摘要

为了能准确地模拟人体的振动响应特性，并减少模型的复杂程度，结合分析力学和人体各部位实际状况，建立了六自由度坐姿人体动力学模型。列出了该模型的运动微分方程，并推导出人体振动响应特性的计算公式，以试验数据为依据，以动态等效质量和座位处到头部传递函数为目标，运用多目标优化方法获得了模型参数。结果显示，六自由度模型能准确的拟合人体振动响应特性曲线。将该模型与经典的集中参数模型（ISO 5982（2001）模型）和复杂生物力学模型（Tae －Hyeong Kim 的模型）进行对比分析，该模型能更好地拟合试验数据，其结构简单却能相对完整、准确地反映人体动态特性，可用于人体振动响应仿真分析。%To precisely simulate the dynamic response of a seated human body and simplify its mechanical model, a six-DOF dynamical model was developed by combining analytical mechanics and actual situations of each segment of a human body.Its equations of motion and formulas of dynamic response were presented and parameters of the model were derived with measured data of apparent masses,vertical and rotational vibration transfer functions from seat to human head using curve fitting.Results showed that the model can precisely fit the dynamic response of the seated human body. Comparing the proposed model with the classical lumped model (a model recommended by ISO 5982 (2001 ))and a complex biodynamic model (Tae-Hyeong Kim's model),it was shown that the proposed model can fit the dynamic response the seated human body more precisely with a simpler structure,and it can be used to simulate the dynamic response of the seated human body.