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双钢轮高频振动压路机的振动轴在满足设计要求的情况下需要尽可能地小,以降低振动系统的自重,减少激振系统的转动惯量,但是要考虑振动轴挠性变形对轴承的影响。通过ANSYS有限元分析对高频振动轴进行应力、应变分析,并通过建立精确的高频振动轴子模型证明分析结果收敛。通过振动轴的模态分析获得其前6阶固有频率和相应的振型图,分析得出振动轴的固有频率远大于工作频率,避开了共振区域。
The vibration shaft of the double drum high frequency vibratory roller needs to be as small as possible to meet the design requirements to reduce the self weight of the vibration system and reduce the moment of inertia of the vibration excitation system. However, the influence of the flexible deformation of the vibration shaft on the bearing should be considered . The stress and strain of the high-frequency vibrating shaft were analyzed by ANSYS finite element analysis and the analytical results were proved to be convergent by establishing a precise high-frequency vibration axis sub-model. Through the modal analysis of the vibration axis, the first six natural frequencies and the corresponding mode shapes are obtained. The analysis results show that the natural frequency of the vibration axis is much larger than the operating frequency and avoids the resonance region.