finite element method;  frequency;  response analysis;  Stability analysis

The general software of finite element structure analysis has been widely used in the analysis and calculation of mechanical products, and the model simplification, network segmentation and input of certain parameters of the research object are very critical when performing dynamic analysis calculation. This paper summarizes the experience in the calculation of engineering examples of various types of mechanical products, points out the problems that should be paid attention to when using general software for frequency solving, dynamic response analysis, stability analysis and contact stress analysis, and gives simplified methods for boundary elements and parameter input skills.