【摘要】 利用有限元软件ANSYS对卧式螺旋离心机转子系统进行动力学分析,通过改变外转子的材料密度将内转子和物料的转动惯量等效转换到外转子的思路建立三维模型,进行高质量的网格划分。利用模态分析得到该模型前六阶固有频率以及其所对应的振型进行讨论,并进一步计算在陀螺效应下的临界转速。此分析方法可为同类离心机转子系统刚度分析提供参考。更多还原

【Abstract】 By using fi nite element software ANSYS,dynamics analysis of rotator system in decanter centrifuge was carried out.With the idea of equivalently transforming the rotary inertia of inner rotator and fl uids into that of outer rotator by changing the density of outer rotator,net classifi cation with high quality was fulfi lled.From the result of model analysis,six inherent frequencies of the model were determined,and the vibration shapes relevant to these frequencies were discussed.Then,the critical rotating speed was,then,calculated.The analysis method presented herein could be referenced later in stiffness analysis of rotator system in the same kind of decanter centrifuge.更多还原