EASY-EV通用底盘模态试验  

EASY-EV General Chassis Modal Test

作　　者：王乐 张垚 刘力新 黎长青 WANG Le;ZHANG Yao;LIU Lixin;LI Changqing(China Automobile Research Institute(Jiangsu)Automotive Engineering Research Institute Company Limited,Suzhou 215129,China)

机构地区：[1]中汽院(江苏)汽车工程研究院有限公司,江苏苏州215129

出　　处：《汽车实用技术》2022年第9期70-73,共4页Automobile Applied Technology

摘　　要：底盘是汽车发动机以及各部件、总成的重要承载部件,并接受发动机的动力,使汽车产生运动并保证正常行驶,其固有频率与振型是整车安全运行的重要保证。为了测试EASY-EV通用底盘的前十阶模态频率、一阶扭转频率、一阶弯曲模态频率,文章对该通用底盘模态测试进行了模态试验方案设计、模态测试以及模态拟合与模态验证。测试结果表明,EASY-EV通用底盘一阶模态即为整车一阶弯曲模态,模态频率26.7 Hz,阻尼4.32%,该振型为在XZ平面内的弯曲,EASY-EV通用底盘一阶扭转模态频率35.6 Hz,阻尼2.85%,绕X轴扭转,后部变形较大。The chassis is an important bearing part of the automobile engine and the components and assembly,and accepts the power of the engine to make the car move and ensure the normal running.Its natural frequency and mode shape are the important guarantee of the safe operation of the whole vehicle.In order to test the first ten order modal frequencies,the first order torsion frequency and the first order bending modal frequencies of the EASY-EV universal chassis,the modal test scheme design,modal test,modal fitting and modal verification of the universal chassis modal test were carried out in this paper.The test results show that the first-order mode of EASY-EV universal chassis is the first-order bending mode of the whole vehicle,the modal frequency is 26.7 Hz,the damping is 4.32%,and the vibration mode is bending in the XZ plane,the first-order torsional modal frequency of EASY-EV universal chassis is 35.6 Hz,the damping is 2.85%,it rotates around the X-axis,and the rear deformation is large.

关 键 词：EASY-EV通用底盘 模态分析 固有频率 模态频率 弯曲模态 扭转模态 

分 类 号：U463.8[机械工程—车辆工程]