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Based on 500kV power transformer, according to the mass-spring system model for the axial vibration of power transformer winding and its nonlinear characteristics, a calculation model is simplified, the modal simulation system of power transformer active part, which composes of core, windings, tensile plates and clamp frames is established, the natural frequencies and vibration modal in different...
By the use of theories of Finite Element Method(FEM) and multibody system(MBS), the kinematics expression of elastic body in multibody system, its elastic deformation described with Rayleigh-Ritz method and its equation of motion based on d'Alembert law and Jourdain's virtual power principle are studied in detail. And the processing method to express the characteristic information of elastic body...
The development requirements of the high-speed and heavy-loaded trend put forward new research subjects and challenges for vehicle systems and their dynamics, especially the dynamics questions caused by elastic body and rigid-flexible coupling. By combining theories of multibody system and FE, the kinematics expression of elastic body in heavy haul system, its elastic deformation and its equation...
In this paper the discussions on the axial vibrations modal of power transformer windings under different levels of pre-compression through experiment and computation are presented. The axial vibrations modal of windings was investigated on the transformer model of windings both analytically and calculatedly, this proves that the changes of pre-compression on the windings have effects on their natural...
The dynamics mathematical model of the driving wheel of vibro-roller-soil system is established, and the theoretical analysis and the simulation research of continuous detection for vibro-roller compactness are carried on. The relations of the vibrating wheel acceleration, the compact soil rigidity and damping are obtained; and then the method of measuring compactness indirectly through detecting...
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