Study On Visual And Integrating CAD System Of The Miter Gate

The miter gate is adopted most widely in navigation lock, whose design is burdensome and heavy. According to the present situation of the CAD research in Hydraulic Metal and the main form of the miter gate, a visual and integrating CAD system is developed by referring to the experience of related CAD system development. The main contents are as follows:l.This paper discusses the structure of CAD system. According to the design process of the miter gate, this paper adopts parallel structure to combine the plain structure design, spacial FEM calculations and working drawing in RZMCAD system. During the programming, Mixed-language programming technology is applied by using the prevalent developing tools such as VB, VF, VBA and so on, which makes RZMCAD system bear friendly interface and high computation efficiency.2. This paper studies the second development technology of VBA based on AutoCAD and develops the visual FEM system of the metal gate. According to the characteristics of plain metal gate, this paper puts forward the HHU superelement technology for FEM modeling of plain metal gate. As a result, the input of parameters with visual mode is realized and the efficiency and quality of the modeling of FEM is enhanced.3. According to specification for the navigation lock, water resources and hydropower engineering specification for design of steel gate, tnech-electric design handbook for hydropower station and with the consideration of the related theories on steel structure, this paper studies the design method and calculation theories of the miter gate. On the basis on above, the plain structure design subsystem is developed with intelligent function.4. With the Using of the thin-walled structure FEM theory, the FEM model is set up, which can reflects the distortion characteristic and stress distributing rule. Also, with the consideration of the configuration characteristics of the miter gate, the parameterized method of pre-process and post-process is studied and the FEM calculations subsystem is developed. Furthermore, this paper cites an example to illustrate the analysis and calculation of a miter gate.5. The parameterized method of working drawing of the miter gate is discussed in this paper. With the foundation of the establishing of a graph library of Hydraulic Metal, the working drawing subsystem is developed, which realizes automatization of working drawing,...