3D Finite Element Calculation and Analysis of Two-way Water Sealing Cast Iron Gates
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Abstract:
A three-dimensional finite element model of cast iron gate in a hydraulic project was developed using ANSYS software. Under the working conditions that the forward and reverse head difference was 10 m, the maximum stress and deformation were calculated and analyzed using the thin plate theory and three-dimensional finite element method. The results showed that the errors of maximum stress and deformation are as high as 30%-50% for the two methods. The calculation results obtained from the traditional empirical formula were more conservative, which can cause the increasing of manufacturing cost of cast iron gate, especially when the maximum stress and deformation were not at the same place under reverse head. There were deficiencies in analyzing the allowable stress intensity and stiffness required by relative standards according to the compression/tensile strength of the cast iron gate material and the stress and deformation variations of gate under inverse/reverse force. In this paper, the optimization scheme of arrangement type and section size of the gate was proposed in order to reduce the manufacturing cost.
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