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BP neural network is effective for deaLing with non-Linear mapping which could satisfactorily describe the non-Linear relations between frequency character and diagnosis results. So the de-noising and feature extraction methods of rotating machinery is discussed in this paper, and a diagnosis model for rotating machinery based on BP neural network is proposed and set up. Then, emulates the model of...
The dynamic response of pavement and subgrade of highmay were analyzed by the developed two-dimension finite element numerical analysis procedure. The influencing of pavement base course stiffness, driving speed and vehicle weight on dynamic response of pavement and subgrade were discussed. The research shows that the vertical maximum vibration acceleration of pavement surface decreases with the base...
Liquefaction foundation treated by stone columns is analyzed by the fully coupled three-dimension effective-stress dynamic analysis procedure; the influence law of stone columns design parameter on anti-liquefaction effect is discussed. The research shows that with the diameter of stone columns increasing, the surface maximum horizontal vibration acceleration and settlement of the soil of columns...
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