基于ANSYS的汽车传动轴模态识别  

Modal identification of automobile transmission shaft based on ANSYS method

作　　者：陈美宏 徐传燕[1] 许春晓 李光胜 CHEN Meihong;XU Chuanyan;XU Chunxiao;LI Guangsheng(School of Automotive Engineering,Shandong Jiaotong University,Jinan 250357,Shangdong,China)

机构地区：[1]山东交通学院汽车工程学院,山东省济南市250357

出　　处：《农业装备与车辆工程》2023年第8期20-24,共5页Agricultural Equipment & Vehicle Engineering

基　　金：山东省自然科学基金面上项目(ZR2020ME126)。

摘　　要：传动轴在汽车动力传输过程中起着传递动力和扭矩的作用,不合理的设计会导致传动轴产生较大的振动和噪声,严重时会出现弯曲甚至断裂现象。基于ANSYS有限元分析软件建立传动轴仿真模型,分析获取传动轴固有频率及模态振型。通过锤击测试法对传动轴进行试验模态分析,与有限元分析结果对比,各阶模态固有频率的最大误差未超过5%,验证了传动轴模态与有限元计算结果的可靠性,2种结果存在误差的原因主要包括尺寸测量误差、材料属性误差及试验环境条件产生的误差等,为传动轴减振和降噪等提供依据。Transmission shaft plays a role in transmitting motion and torque in the process of automobile power transmission.Unreasonable design will lead to larger vibration and noise of the drive shaft,serious bending,and even fracture phenomenon will occur.The transmission shaft simulation model was established based on ANSYS finite element analysis software to analyze and obtain the natural frequency and modal shape of the transmission shaft.Compared with the finite element analysis results,the maximum error of the natural frequencies of each mode was less than 5%,which verified the reliability of the transmission shaft modal and finite element calculation results,and analyzed the reasons for the error of the two results,which mainly included dimension measurement error,material attribute error and experimental environmental condition error.It provided basis for vibration and noise reduction of transmission shaft.

关 键 词：传动轴 有限元分析 试验模态 

分 类 号：U463.2[机械工程—车辆工程]