Abstract: In order to resolve the problems of long design cycle, low efficiency, poor product performance of grain combine-harvester cutter, and better evaluate the flatness of grain-combine harvester，this paper put forward a simulation analysis method based on ADAMS for smoothness of grain combine-harvester cutter and whole machine as well. Based on ADAMS, the paper built a drive mechanism model for the cutter and carried out simulation analysis. The time changing curve of key parameters of the cutter was obtained, thus providing references for driving mechanism improvement. At the same time, the paper also established the model of grain combine-harvester based on ADAMS, and conducted dynamic simulation on the complex obstacles roadway, thus providing favorable theoretical support for the smooth improvement of the harvester. Simulation results indicated that this method could better optimize the grain combine-harvester cutter design and complete simulation analysis on the whole machine smoothness. The above mentioned endeavors could effectively support the application of advanced design methods in the field of agricultural machinery design.

Key words: combine-harvester, virtual prototype, cutter drive mechanism, stationarity, ADAMS

摘要： 为了解决目前谷物联合收割机切割器设计周期长、效率低、产品性能差等问题，以及更好的评价其平顺性，提出一种基于ADAMS的谷物联合收割机切割器与整机平顺性仿真分析方法。基于ADAMS建立切割器的驱动机构模型并进行仿真分析，求得切割器关键参数的时间变化曲线，为驱动机构的改进提供参考；基于ADAMS建立谷物联合收割机车体模型并进行复杂障碍路面上的动力学仿真，为收割机平顺性的改进提供有利的理论支持。仿真结果表明，该方法能较好的求解谷物联合收割机切割器的设计优化问题及完成整机平顺性的仿真分析，可以有效地支持农业机械设计领域的先进设计方法的应用。

关键词: 联合收割机, 虚拟样机, 割刀驱动机构, 平稳性, ADAMS