Abstract
A two-dimensional micro slip model was presented by introducing parallel springs with sliding contact to simulate two-dimensional friction force in in-plane motion. Two coupling spring-damper elements were used to mimic the damping effect and the finite element model of the B-G (blade-ground) platform damper was set up. From the friction model and finite element model, the reducing vibration characteristic of blade at or near operating frequency is studied. The results show that there is a range of normal load, during which the steady amplitude of blade can be controlled to a minimum value, and that exciting frequency has no effect on reducing vibration characteristic of blade. The two-dimensional micro model can be developed to analyze blade with platform damper as contacting motion is in complicated in-plane.
| Original language | English |
|---|---|
| Pages (from-to) | 282-288 |
| Number of pages | 7 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 27 |
| Issue number | 2 |
| State | Published - Feb 2012 |
Keywords
- Aviation propulsion system
- B-G (blade-ground) platform damper
- Coupled vibration
- Dry friction damping characteristic
- Reducing vibration
- Two-dimensional micro slip model