具有多自由度人-拖拉机非线性振动模型研究

为了能更深入了解坐姿人体—拖拉机系统的振动问题，并基于人体和拖拉机结构上的特点，将人体用模型转化为非线性机械系统，并建立一种具有多自由度人—拖拉机非线性振动系统模型，通过算例得到理论数值模拟结果与实验结果比较表明所建立的模型是正确有效的。从而为进一步进行拖拉机舒适性的数值模拟实验技术研究提供了理论依据。

Nonlinear Multi-Freedom-Degree Vibration Model of the Human-Tractor System

For the purpose of deeper investigation on vibration problem of human-tractor system, and based on the structural characteristics of the human and the tractor, a human body is modeled as a nonlinear mechanical system, and a nonlinear multi-freedom-degree vibration model for the human-tractor system is derived in this paper. The simulated results, obtained from a numerical example and compared with the experimental values, show that the vibration model is valid. This research provides a theoretical basis for the future study on the numerical simulation technology for designing the tractor with the best driving comfortablity.