基于CATIA的水电站地下厂房三维设计及有限元研究  

Three Dimensional Design and Finite Element Analysis of Underground Powerhouses with CATIA

作　　者：程雪辰 伍鹤皋[1] 苏凯[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《水电与新能源》2015年第12期20-24,共5页Hydropower and New Energy

基　　金：国家自然科学基金资助项目(51179141);项目名称:水力发电机组蜗壳不同埋入方式时的接触力学行为和传力机制研究

摘　　要：结合某水电站地下厂房工程实例,参数化建立了包含主副厂房、母线洞、主变洞、调压室、压力管道的几何模型,同时针对一般CAE软件建模低效等问题,选取水轮机层至发电机层的部分地下厂房模型作为研究对象,对比分析了3种基于CATIA的有限元模型构建方法。研究表明:使用CATIA自带模块或将CATIA划分的网格单元直接导入ABAQUS进行有限元分析的2种方法,存在网格单元不连续、CATIA网格划分功能较弱等缺陷;而对于将CATIA几何模型导入ABAQUS的方法,能充分结合CATIA先进的建模功能及ABAQUS更强大的网格划分功能,顺利实现了CAD模型与CAE有限元分析的无缝对接。Model establishing is usually inefficient in common CAE software .Based on a real underground powerhouse example , geometric models including the main and auxiliary powerhouses , the busbar tunnel , the main transformer cav-ern, the surge tank and the penstock are established .Then, three finite element modelling methods with CATIA are compared with part of the powerhouse models between the turbine floor and the generator floor .If the finite element anal-ysis module in CATIA is adopted directly , or the mesh discretization is done in CATIA and then imported into ABAQUS , problems such as discontinuity between elements are found .It is also found that the mesh discretization function in CAT-IA is rather weak .While the third method is recommended that the model is built in CATIA and then imported into ABAQUS for mesh discretization and analysis , which combines the advanced modelling function of CATIA and powerful finite element mesh discretization function of ABAQUS .

关 键 词：地下厂房 三维设计 网格划分 有限元分析 

分 类 号：TV731.6[水利工程—水利水电工程]