Abstract
The jet-pipe servovalve is widely used in the fields of aeronautics and astronautics; it is a kind of typical two-stage flow control electro-hydraulic servo-valve, whose performance will degradate due to work loads and environmental loads in practical use. The structure and working principle of jet-pipe servo-valve are introduced, the failure mechanism of weak item affecting jet-pipe serv-valve durability is analysed, the software simulation is conducted and the durability lifetime is calculated. The weak item's durability lives of the jet-pipe servo-valve are obtained with software simulation and theoretical calculation respectively. The results and their analysis show preliminarily that the jet-pipe servo-valve durability life meets its standard requirements. Software simulation and durability life calculation method can be used to predict similar durability lifetime and evaluate product's durability level; this, we believe, is useful for improving product's durability design.
| Original language | English |
|---|---|
| Pages (from-to) | 326-331 |
| Number of pages | 6 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 33 |
| Issue number | 2 |
| State | Published - 1 Apr 2015 |
Keywords
- Calculations
- Computer simulation
- Computer software
- Control
- Design
- Durability
- Erosion
- Erosion wear
- Failure modes
- Fatigue of materials
- Flow rate
- Forecasting
- Friction
- Jet-pipe servovalve
- Life prediction
- Motors
- Power spectral density
- Surface roughness
- Vibrations (mechanical)
- Wear of materials