High-pressure fluctuation and flow ripple may cause unexpected vibration noise when the piston pump works under severe conditions, eventually lead to hydraulic transmission failure. The geometry of valve plate has a great influence on pressure chamber. In order optimize structure plate, mathematical model considering slot leakage lubricating interfaces was established in this paper. used invest...

Cavitation erosion is induced by the penetrating pressure from implosion of cavitation bubbles nearby solid boundary. The bubble evolution and subsequent collapse are especially important to evaluate degradation boundary materials. dynamics equation taking into account influence distance between formulated investigate effect wall on process. fluctuation slapping forces adopted dynamic character...

Abstract Invasive non-native plants challenge ecosystems restoration, and understanding the factors that determine establishment of invasive is crucial to improve restoration outcomes. However, drivers invasibility plant communities are not sufficiently clear, combined effects understood. Therefore, we investigated contribution main invasion success during early phases i.e., biotic resistance, ...