|
| Improvement of Vibration Testing Method Based on Modal Analyzing |
| Received:November 08, 2019 Revised:December 22, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.05.010 |
| KeyWord:modal analysis vibration fixture vibration testing |
| Author | Institution |
| LIU Long-tao |
Shanghai Electro-Mechanical Engineering Institute, Shanghai , China |
| ZHANG Bao-gang |
Shanghai Electro-Mechanical Engineering Institute, Shanghai , China |
| YU Zhe |
Shanghai Electro-Mechanical Engineering Institute, Shanghai , China |
| ZHANG Xing-yong |
Shanghai Electro-Mechanical Engineering Institute, Shanghai , China |
| YU Liu-jian |
Shanghai Electro-Mechanical Engineering Institute, Shanghai , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The paper aims to improve the design of test fixture and make the first order modal frequency of the test fixture be larger than 60 Hz. Two methods, namely improving the structure and changing boundary conditions, were adopted for optimization design based on modal analyzing.From the results of modal analysis, improving boundary condition was valid to improve the modal frequency; while changing the boundary condition can significantly improve the fixture frequency. The first order modal frequency of the improved fixture was 69.5 Hz, which was greater than the input load frequency range. The nature frequency of test fixture should avoid the input load frequency range of vibration testing, to avoid influences to the test result. |
| Close |
|
|
|