|
| The Modal Analysis on the TLJ500 Centrifuge with the Pre-stress and Gyroscopic Effect |
| Received:March 09, 2020 Revised:April 03, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.07.012 |
| KeyWord:geotechnical centrifuge modal analysis model updating pre-stress effect gyroscopic effect |
| Author | Institution |
| CHEN Xue-qian |
Institute of Systems Engineering, China Academy of Engineering Physics CAEP, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| SHEN Zhan-peng |
Institute of Systems Engineering, China Academy of Engineering Physics CAEP, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| DU Qiang |
Institute of Systems Engineering, China Academy of Engineering Physics CAEP, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| CHEN Hong-yong |
Institute of Systems Engineering, China Academy of Engineering Physics CAEP, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| LI Shang-ming |
Institute of Systems Engineering, China Academy of Engineering Physics CAEP, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| This paper aims to get the influence of various comprehensive effects on the modal frequency of the centrifuge during operation. Firstly, the natural frequency relationship about synthetically effect, no effect, only pre-stress effect and only gyroscopic effect is established in theory. Then, the finite element (FE) model of the TLJ500 centrifuge is built, and the elastic modulus of the bearing is identified by the FE model updating based on the modal test results when the centrifuge is not working. Next, the elastic modulus of the bearing in the centrifuge FE model with working is replaced by the identifying result, and the modal analysis is carried out. Lastly, the natural frequency of the TLJ500 centrifuge with the pre-stress and gyroscopic effect is calculated by combining the FE simulation results and the theory equation. The synthetically calculating results agree with the experimental results better when the centrifuge is working, which proves the feasibility of the proposed approach, and which can be used to calculate the more believed critical speed of revolution when designing the centrifuge. |
| Close |
|
|
|