一种建立人体振动生物力学模型的新方法

A New Method for the Biomechanics Model of Vibrating Human Body

视人体为非均质非均弹性模量的时不变连续体,提出了一种建立特定姿态人体振动生物力学模型的新方法。作为例证,将立姿人体离散化为16个生理环节,并建立了16个自由度、无阻尼线性集中参数的振动生物力学模型。给出了模型物理参数的计算方法和算例。得到的16个立姿人体固有频率和立姿人体下肢环节的等效刚度值与前人的实验结果比较,具有良好的一致性。

Based on considering the human body as a time invariant body with non-uniform density and elastic module,a new method for the vibration model of the special posture human body has been present- ed.As an illustration,a standing human body represented by 16 segments has been modeled into 16-de- gree-freedom,uncoupled and linear parameter vibration system.The method for calculating the physical parameters of the system is also put forward.The natural frequencies of the standing human body and the equivalent spring stiffness of the lower lamb of the standing human body from a numerical example agree with the available experimental values well.