【摘要】 机身的振型和固有频率与其振动现象的发生有密切联系。为了改善冲压件的加工质量,提高模具的使用寿命和减小振动、避免共振,利用有限元软件ANSYS对JG21压力机机身的振动特性进行模态分析。得出表征机身振动特性的主要的5阶振型、固有频率以及相应的应变分布云图。通过分析其各阶振型的具体特点,总结在机身设计和压力机运行过程中以及分析方法方面应注意的问题。更多还原

【Abstract】 The vibration mode and natural frequency of machine’s frame are closely related to its resonance phenomena.In order to improve the quality of sheet metal stamping,raise the lifespan of punch and die,and reduce vibration or avoid resonance,a vibration modal analysis for JG21-compressor’s frame is made by using the finite element software ANSYS.The first five vibration modes,the corresponding natural frequencies,and the corresponding strain distribution diagrams are obtained.Some problems that should be noted in compressor frame’s design and analysis and in compressor’s operation are summarized through the analysis of the characteristics of the vibration modes.更多还原