Abstract
The spatial correlation of a multidimensional force produced by different aircraft components is an important factor that affects the structural vibration of aircraft. To predict the structural response by external forces with a certain phase difference, determined by the spatial correlation of external forces, an analytical method based on structural response integration is developed and adopted. The characteristics of the external forces, especially the phase difference of the structural vibration, are investigated to reduce structural vibration by utilizing the spatial correlation of the external forces. Additionally, to suppress structural vibration by a propagation wavefield, corresponding to complex flow excitation, the developed integration method is used to estimate the accuracy of the propagation wavefield replaced by concentrated forces. Finally, a measurement is designed and performed, which further reveals the spatial correlation effect of the external forces on the structural vibration.
| Original language | English |
|---|---|
| Article number | 106928 |
| Number of pages | 12 |
| Journal | Aerospace Science and Technology |
| Volume | 117 |
| Early online date | 16 Jul 2021 |
| DOIs | |
| Publication status | Published - 31 Oct 2021 |
Funding
The funding support of the National Natural Science Foundation of China (under grant nos. 52076014 and 91952302 ) is acknowledged.
Keywords
- multidimensional force
- phase difference
- spatial correlation
- structural vibration
- vibration suppression