用于液体容器内液位测量的金属薄壁梁振动模态仿真研究  

Simulation Study on Vibration Modes of Metal Thin-Walled Beam for Liquid Level Measurement in a Liquid Container

作　　者：毕俊召[1] 刘碧伟 罗伟忠 BI Jun-zhao;LIU Bi-wei;LUO Wei-zhong(Jilin Vocational College of Electronic Information Technology,Jilin Jilin 132021,China;Jilin University,Jilin Changchun 130015,China;Changchun University of Science and Technology,Jilin Changchun 130022,China)

机构地区：[1]吉林电子信息职业技术学院,吉林吉林132021 [2]吉林大学,吉林长春130015 [3]长春理工大学,吉林长春130022

出　　处：《机械设计与制造》2024年第7期50-56,共7页Machinery Design & Manufacture

基　　金：吉林省教育厅科学技术研究项目(JJKH20220896KJ)。

摘　　要：为实现用于液体容器内液位测量的金属薄壁梁振动模态的准确模拟,构建金属薄壁梁的有限元圆梁模型。该模型采用有限元法对金属薄壁梁纵向振动模型的特征频率进行分析,从而对金属薄壁梁暴露于外部刺激时所产生的纵向振动进行准确模拟。在所开展研究中,对薄壁梁采用圆梁分布质量模型,分析模型的前4种振动模态的特征频率。为验证该模型的有效性,将该模型对金属薄壁梁前4种纵向振动模态的模拟结果与理论模型结果、实际金属薄壁梁试验结果及其他两种仿真模型的模拟结果进行了对比。对比结果表明,所构建圆梁模型对金属薄壁梁纵向振动模态的模拟结果与理论、试验分析结果高度一致,且模拟结果效果明显优于其他两种模型。To accurately simulate the vibration modes of the metal thin-walled beam used for liquid level measurement in a liquid container,a finite element circular beam model of metal thin-walled beam is constructed.The constructed model is used to analyze the characteristic frequencies of the longitudinal vibration models of the metal thin-walled beam,so that the longitudinal vibrations of this metal thin-walled beam exposed to external stimuli can be accurately simulated.In this study,the distributed mass model of the circular beam is adopted to analyze the characteristic frequencies of first four longitudinal vibration modes of the thin-walled beam.To verify the effectiveness of the constructed model,the simulation results of the first four vibration modes of the metal thin-walled beam are compared with those of the theoretical model results,the experimental results of the metal thinwalled beam and the simulation results of the other two simulation models.The comparison results show that the simulation results of the circular beam model are highly consistent with the theoretical and experimental analysis results,and the simulation results are significantly better than the other two models.

关 键 词：金属薄壁梁 纵向振动模态 圆梁模型 有限元仿真 液体容器 

分 类 号：TH16[机械工程—机械制造及自动化] TP274.53[自动化与计算机技术—检测技术与自动化装置]