基于ANSYS的卧式离心机转鼓模态分析与优化设计  

Modal Analysis and Optimization Design of Horizontal Centrifuge Drum Based on ANSYS

作　　者：徐利利 卓耀彬[1] 苗义高 XU Lili;ZHUO Yaobin;MIAO Yigao(School of Engineering,Lishui University,Lishui 323000,China)

机构地区：[1]丽水学院工学院,浙江丽水323000

出　　处：《机械工程与自动化》2025年第2期61-62,共2页Mechanical Engineering & Automation

基　　金：浙江省自然科学基金资助项目(LLSSZ24E050001);丽水市重点研发项目(2023ZDYF01);丽水市自筹类公益性技术应用研究项目(2023SJZC085)。

摘　　要：采用ANSYS对卧式离心机转鼓的模态特性进行了系统研究,并提出了优化设计建议。首先,在SolidWorks中建立转鼓的几何模型,然后分析了转鼓在自由状态下的前12阶模态。分析结果显示,转鼓的第7阶、第9阶和第11阶模态的固有频率分别为162.45Hz、299.95Hz和407.16Hz,其中第7阶模态的轴向弯曲振型与转鼓的工作频率范围(90Hz~200Hz)接近,存在共振风险,可能导致局部应力集中及加速疲劳损伤。基于分析结果,提出了增加转鼓壁厚、设置加强筋和涂覆阻尼涂层等优化措施,以提高低阶固有频率,远离工作频率范围,从而有效降低共振风险,提升转鼓的抗振性能和结构可靠性。This study systematically investigates the modal characteristics of a horizontal centrifuge drum using ANSYS and proposes optimization measures.Initially,a three-dimensional geometric model of the drum was constructed,and the first 12 modes in a free state were analyzed.Results show that the natural frequencies of the 7th,9th,and 1lth modes are 162.45 Hz,299.95 Hz,and 407.16 Hz,respectively.Notably,the axial bending mode of the 7th frequency falls within the drum's operating frequency range(90 Hz~20o Hz),indicating a potential resonance risk,which could lead to localized stress concentration and accelerated fatigue damage.Based on the findings,this study suggests optimization measures such as increasing wall thickness,adding stiffeners,and applying damping coatings to raise the low-order natural frequencies above the operating range,thereby effectively mitigating resonance risk and enhancing the drum's vibration resistance and structural reliability.

关 键 词：卧式离心机转鼓 模态分析 结构优化 共振风险 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]