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针对挖掘机工作装置的结构特点 ,建立了其系统 3维有限元模型 ,通过分析得出了系统的固有频率和振型 ,以及结构动态响应各时刻的变形和应力分布规律。比较了工作装置在开挖难度较小和较大 2种情况下 ,挖掘阻力对系统动力响应的影响
According to the structural characteristics of the excavator working device, the 3-D finite element model of the system is established. The natural frequencies and modes of the system and the laws of deformation and stress distribution of the dynamic response of the structure are obtained. The effect of excavation resistance on the system dynamic response is compared between two kinds of working equipments, which are difficult to excavate and larger.