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In this paper, the effects of stress relaxation on the sealing performance of the fabric rubber seal are studied under pressure difference and compressive displacement. First, the prediction method about the gas leakage rate of the fabric rubber seal is presented based on the viscoelastic theory and the microchannel model. Second, both the average contact stress and the contact length of the fabric...
This paper presents a mathematical model of torque motor based on the magnetic circuit method. Through establishing equivalent magnetic circuit, the internal magnetic field of torque motor is analyzed. Following that, the output torque can be calculated. The results of this model are verified by three-dimension finite element analysis and conform well with the analysis. Our obtained results can be...
This paper examines the development and evolution of shear bands in granular assemblies when particle rolling and imperfections are taken into account. Simulated biaxial tests in two-dimension are conducted using the discrete element method. The progressive development of rotational angles and effective strain are presented to describe the emergence and evolution of shear bands in biaxial tests. The...
In order to improve EFVS (Enhanced Flight Vision System) in visible light image and infrared image fusion efficiency, to enhance the real-time of Wavelet transform image fusion algorithm, put forward a kind of wavelet transform image fusion algorithm based on matrix Doolittle decomposition. The pixel matrix of the algorithm on the original image is decomposed by Doolittle, Wavelet fusion of upper...
Traditional special protection systems (SPS) take action according to generator rejection scheme (GRS) or load shedding scheme (LSS), which is simulated on an annual operation mode and therefore contributes to the following two problems: on the one hand there may be worse situations in the real-time power grid, in this case, GRS which is simulated on the basis of annual operation mode can't ensure...
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