主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (9): 70-73.DOI: 10.16638/j.cnki.1671-7988.2022.009.015

• 测试试验 • 上一篇    

EASY-EV 通用底盘模态试验

王 乐，张 垚，刘力新，黎长青   

  1. 中汽院（江苏）汽车工程研究院有限公司
  • 出版日期:2022-05-15 发布日期:2022-05-15
  • 通讯作者: 王 乐
  • 作者简介:王乐（1992—），男，工程师，研究方向为底盘及其零部件测试，E-mail：wangle@caeri.com.cn。

EASY-EV General Chassis Modal Test

WANG Le, ZHANG Yao, LIU Lixin, LI Changqing   

  1. China Automobile Research Institute (Jiangsu) Automotive Engineering Research Institute Company Limited
  • Online:2022-05-15 Published:2022-05-15
  • Contact: WANG Le

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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。

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

Abstract: 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.

Key words: EASY-EV universal chassis; Modal analysis; Natural frequency; Modal frequency; Bending mode; Torsional mode