考虑结构非线性的轴系传动随机振动响应分析  

Analysis of Random Vibration Response of Shafting Transmission Considering Structural Nonlinearity

作　　者：孟祥昊 于坤鹏[1] 王志海[1] MENG Xianghao;YU Kunpeng;WANG Zhihai(No.38th Research Institute of CETC,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《机械与电子》2024年第6期45-49,共5页Machinery & Electronics

基　　金：国防科工局基础科研项目(JCKY2021210B007,JCKY2020210B007)。

摘　　要：为了研究转轴结构中零件配合状态、间隙等非线性因素对其随机振动响应的影响,基于显式动力学分析,在时域内对转轴结构的随机振动响应进行了仿真。结果表明处于紧密配合状态的零件间振动传递更加平顺,响应幅值小于临界状态。当结构存在间隙时,其响应幅值随着间隙的增大而显著下降,但零件间的碰撞会导致结构高频段的响应增加,同时也会加剧零件的磨损。研究结论可以为结构的设计理念和选型方法提供参考。In order to study the influence of nonlinear factors such as fit state and clearance on the random vibration response of the shaft structure,its random vibration response is simulated in the time domain based on explicit dynamics analysis.The results show that the vibration transmission between parts in the interference fit state is smoother than that in the critical state,which results in a smaller response amplitude.When clearance occurs between the parts,the response amplitude shall decrease significantly as the clearance widens.However,the collision between the parts will increase the high-frequency response of the structure,which may also intensify the wear of the parts.The conclusions can provide references for structural design concepts and selection methods.

关 键 词：随机振动 非线性 时域仿真 

分 类 号：TH113.1[机械工程—机械设计及理论] O324[理学—一般力学与力学基础]