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According to the mechanical failure of Gas Insulated Switchgear (GIS) in the earthquake will cause a great loss to the power system. This paper, by using the three-dimension design software to build a geometric model of 420 kV GIS, by using the finite element analysis method to make the mode analysis, and then acquired structural frequencies and mode features of the GIS, and by using spectral analysis...
This paper is concerned with the calculation of stress in the region of interest in complex welded structures. However, analysis of welded structures still remains a challenge for the analyst and in fact cannot be considered as fully resolved for practical applications. The purpose of this paper is to provide some discussion on selected methods recommended by International Institute of Welding (IIW)...
Finite element analysis was done to research the seismic behavior of brick walls strengthened with CFRP. Comparison on the bearing load capacity, deformation and reinforcement effect of different methods between the unreinforced and CFRP-reinforced walls shows that the method of external bonding CFRP can effectively improve the deformation capacity of brick masonry walls and enhances their shear capacity...
The change of screw assembly stress and bearing preload on inertial platform system is the main cause of inertial platform system parameters drift such as constant drift and angular misalignment. The paper appropriately simplifies the complexity structure of the inertial platform system components, discusses the inertial platform system screw assembly stress and bearing preload finite element modeling...
The leaf spring is the flexible component of dependent suspension, which has advantages of simple structure, convenient maintenance, low cost, and can be used to locate the axle. The traditional multi-leaf spring has various defects. The few-leaf-spring has been one of main development trend of leaf springs because of its excellent characteristics. In this paper, a few-leaf-spring with variable thickness...
There is an increasing requirement, in a variety of fields, for the ability to make microscopic movements or to position items with high degree of accuracy. In this paper, a parallel mechanism with prismatic actuators which encompasses three degrees of freedom and can produce motion on a microscopic level is proposed and developed. In order to produce such motion, the mechanism is composed of compliant...
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