关键词: 刚柔耦合, 虚拟样机技术, 机械系统动力学自动分析（ADAMS）, 模态中性文件（MNF）

Abstract: The key technologies in modeling and simulation of the rigid-flexible coupled multi-body system based on virtual prototype are studied.Specific measures are proposed for assuring simulation precision and reducing time.So the operability of the reliability of the rigid-flexible coupled multi-body system based on Pro/E，ANSYS and ADAMS is greatly improved.The key technologies of inputting load，joints and boundary conditions of the shearer working in thin coal seam with pyrites are solved.Theoretical preparation is provided for researching the reliability of the shearer’s cutting unit.The defects on key parts of the cutting unit are founded，which provide sufficient references for quantification.Specially，the solution for key technologies in modeling and simulation of the complex rigid-flexible coupling multi-body system is very significant in researching reliability of multi-body system，reducing the cost of design and realizing the success of physical prototype at the first time.

Key words: rigid-flexible coupled, virtual prototype technology, Automatic Dynamics Analysis of Mechanical System（ADAMS）, Modal Neutral File（MNF）