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A novel technique for automatic seismic data processing using both integral and local feature of seismograms was presented in this paper. Here, the term integral feature of seismograms refers to feature which may depict the shape of the whole seismograms. However, unlike some previous efforts which completely abandon the DIAL approach, i.e., signal detection, phase identification, association, and...
Mechanical expression of diaphragm type air spring can be summarized based on the engineering thermodynamics theory and the geometry, material and contact nonlinear mechanical characteristics of the air spring is theoretically studied, which helps to be gained the treatment method in FE. The finite element model is built in terms of the FEM and the elastic characteristics of air spring is analyzed...
A mechanical model of the air spring with an additional chamber was built with considering the temperature influence. The static and dynamic external characteristics of the air spring were also studied by comparing the results of the simulation with the experiment. The research shows the larger the additional volume is, the smaller the spring stiffness, the air spring inherent damping will tend to...
On the basis of the analysis of vibration characteristics of motor bearing faults and the influence from testing noise on site, calculation of the symptom parameters representing the vibration signals according to the measured vibration signals is proposed, and the sensitivity analysis is carried out to these parameters which can refine effective symptom parameters. As there are limitations for motor...
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