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Gas insulated switchgear (GIS) is widely used for its good economic benefits. But mechanical faults caused by electromagnetic force occur occasionally. The conducting wire and the metal shell are exposed in the alternating electromagnetic field, which is caused by the load current and vortex. This leads to electromagnetic force because of electromagnetic induction. So it is necessary to analyze the...
This paper takes a 298,000T VLCC as the research object and the whole ship finite element model is built up for numerical analysis. The aim of this paper is to calculate and analyze the bearing reaction force of a VLCC under different loading case and wave parameter. Based on the analysis of the calculation results, rules of bearing reaction forces are concluded and discussed, which can be used for...
The load capacity of a hook (latch) which is a component of lock mechanism plays a key role in the safety of locking. A practical method to assess the load acting on the hook is presented. Although the use of static load testing method could get some veritably results, it has a limitation that the data measured in the test could not fully reflect the hook's load capacity. Although the use of finite...
According to the characteristics of the structure and the force of large rectangle aqueduct with longitudinal beams, the author puts forward the practical space method that is more simple and convenient for designing steel bar, and the accuracy of calculation results can also meet the engineering design requirement. Through force analysis of one large rectangle aqueduct with longitudinal beams of...
An improved FEM simulation method of the plate wrinkling is proposed in this work. This method is easier and more effective as well. Reasonable and credible results can be obtained when this method is used to analyze the stability of a plate under a shear load. The practicability of the proposed method is validated further by simulating the instability behavior of the wing box under the aerodynamic...
Based on the test about compression-rebound properties of material bed, there are three zones in roller mill. The movement of material bed between two rollers in roller mill has been analysed. The pressure distribution equations in every zone on the roller's surface have been derived. The stress in roller is important for roller's failure analysis and the life estimation. But it depends on load, structure...
The forces of the ship-based helicopter are analyzed comprehensively in the winds and waves. The parameterized FEM model about the ship-based helicopter body, the mooring cable and the mooring base is established with the language APDL. The parameterized FEM model is used to calculate the tension of the mooring cables for different sea conditions. The mooring cable will present strong nonlinearity...
In the paper, the characteristics of mode and harmonic response of the axis of the high-speed motorized spindle are presented with the FEM (Finite Element Method). A dual-dimension model with the FEM is developed and simulated using ANSYS commercial software. The result shows that the rated rotating speed of the high-speed motorized spindle is far smaller than the first-order natural resonance speed,...
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