基于超单元法的齿轮副传动机构模态分析

摘要

随着减速箱的大型化,齿轮副传动机构的有限元分析模型也随之增大,使得一般有限元软件分析效率降低.为充分发挥现有计算工作站效能,尝试使用超单元法,对减速箱缩减了模型的自由度,达到从静力学有限元模型转化为反映整体性能的动力学有限元模型,从而提高计算机分析效率.分析结果表明,以MSC PATRAN和NASTRAN有限元建模求解减速箱齿轮副传动机构,采用超单元技术可以快速获得固有频率和振型,为齿轮副优化设计提高了效率.%With the development of gear box,the finite element model(FEM) of gear pair is enlarged,thus decreasing its analysis efficiency.To give full play to the operating efficiency of computer,the super-element method is used to reduce the freedom of the model.The analysis results show that the finite element software of MSC PATRAN & NASTRAN is used for solving the gear pair and the natural frequencies and modes are gained by the super-element technology.