水力发电2009，Vol.35Issue(6)：50-52,3.
水轮机垫层蜗壳数值模拟研究
Numerical Simulation Study on the Spiral Case with Cushion Layer of Turbine
摘要
Abstract
The plane axial symmetric calculation model was adopted to analyze the cushion spiral case of a hydropower station by the plane nonlinear finite element analysis method. Then four alternatives of soft cushion layer between the steel spiral case and outside concrete have been calculated and has discussed how the different cushion layer range bring influence law on the spiral case. The calculation results of contact model and common node model were compared to prove that the establishment and application of plane contact model are reasonable and reliable. Then it discusses the feasibility of using spring-gap element to replace the cushion entity element, which provides the reference basis for the construction of project.关键词
蜗壳/垫层/垫层包角/摩擦接触模型/弹簧间隙元Key words
spiral case/cushion layer, cushion layer range/friction-contaet model/spring-gap element分类
建筑与水利引用本文复制引用
张嘉,简政,罗士梅..水轮机垫层蜗壳数值模拟研究[J].水力发电,2009,35(6):50-52,3.
