大型水轮机蜗壳座环与水泥基础间的接触问题

Contact among Volute Casing, Vaned Intake Ring of Large Hydraulic Turbines and the Cement Foundation

本文在采用板壳元、块体元、边界元、伪单元和建立接触点对的基础上,利用分步加载法对蜗壳、座环与水泥基础间的间隙和接触问题进行了有限元分析计算.实例考核证明本文的理论与方法正确、可靠.

Based on four kinds of elements, the contact node pairs are established and the finite element analysis of the clearance and contact among the volute casing, vaned intake ring and cement foundation is carried out with the step loading method. Actual application shows that the theory and method are feasible and accurate.