Optimal Design of Wye Branches for Steel Pipe
|Keywords||Shell structure Bifurcated pipe Optimal design Finite Element Method Structural mechanics method|
The past two to three decades, domestic and international water conservancy and hydropower industry to grow. The penstock is part of the Water Resources and Hydropower Engineering conveyance structures. When a steel pipe needs to supply more than one unit, or be cited from the steel tube to go part of the flow for other purposes, we will need to set the fork tube. The end of the penstock high pressure the bifurcation tube structure is the the typical spatial shell structure, hydropower throat, the bifurcation tube design is one of the important content in the steel pipe design. Great force characteristics of the bifurcation structure fork tube structure type, the fork angle parameter selection and which geological environment and conditions, plus a wide range of fork tube, different fork tube parameters there very different type of bifurcation structure optimization design is essential. Optimization design can greatly speed up the design speed and design quality can greatly improve, compared with the traditional design methods, design optimization can save the project investment, bring great economic benefits. Computer-aided engineering CAE has become essential for the analysis and optimization techniques. Relative to the traditional means of design and analysis, CAE technology has great advantages for our engineering staff to provide a good computational design and analysis platform, complete product design simulation. In today's world, ANSYS, Inc. is one of the most prestigious provider of CAE CAE design and analysis program ANSYS, which provides products, fully functional, and has been widely used in the world. APDL (Parametric Design Language) is one of the ANSYS advanced analysis techniques can be used to implement parametric finite element analysis, analysis of the secondary development of the batch, professional analysis and optimal design, is indispensable ANSYS important technology. In this paper, structural mechanics method and finite element method prescribed in the specification crescent rib steel fork tube stress analysis, and on this basis, the preparation of structural mechanics method to optimize the design process, and the use of finite element analysis software ANSYS Based on APDL parameters Design Language finite element optimization techniques proposed its shape parameter sets optimized design program. Combined with practical engineering, structural mechanics method gives the initial design of the fork tube, with the self program optimized design program; shell element simulation and finite element parametric computational model, using ANSYS optimization module , the fork tubes optimized analysis proposed optimal design. The traditional method of structural mechanics and finite element method of stress analysis and optimization results do comparative analysis, and draw useful conclusions.