基于p型有限元法的平面钢闸门局部屈曲系数计算  

Calculation of Local Buckling Coefficient in Plane Steel Gate Based on p-version Finite Element Method

作　　者：陈峻 张建铭[1] CHEN Jun;ZHANG Jian-ming(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《水电能源科学》2020年第12期173-175,共3页Water Resources and Power

基　　金：国家自然科学基金项目(51769011)。

摘　　要：为探讨p型有限元法在水工平面钢闸门局部屈曲特性分析中的适用性,考虑了长圆形排水孔及主梁腹板不同尺寸的影响,在一定的单元数下选择使用shell单元,通过提升插值多项式阶数p的方式计算得到收敛的屈曲载荷和局部屈曲系数,并与通过传统有限元法等方法得到的结果进行对比。结果表明,p型有限元法在满足一定精度的前提下具有前处理少、网格划分少、收敛速度快的优点,在闸门局部屈曲特性分析中应用具有可行性。To explore the application of p-version finite element method in the analysis of local buckling of hydraulic plane steel gate,considering the influence of the oblong drain hole and different size of girder web plate,under a certain shell element number,the convergent buckling load and local buckling coefficient are calculated through increasing the order of interpolation polynomial,and compared with the results in literature computed by traditional finite element method.The results show that the p-version finite element method has the advantages of less pre-processing,less partition of mesh and faster convergence rate under certain requirement of accuracy,and is feasible in the analysis of local buckling computation.

关 键 词：平面钢闸门 p型有限元法 局部屈曲 主梁腹板 屈曲系数 

分 类 号：TV663[水利工程—水利水电工程] TV34