水利学报2018，Vol.49Issue(3)：291-302,312,13.DOI:10.13243/j.cnki.slxb.20170899
水工结构数值仿真等几何分析方法初探
Primary investigation of isogeometric analysis for hydraulic structures numerical simulation
摘要
Abstract
Numerical simulation of hydraulic structures is an important step in their design and evaluation processes.However,the traditional modeling and meshing patterns of complex structures are complicated and time-consuming.The big gap between the design and the analysis model directly affects the accuracy and efficiency of the solution obtained by finite element analysis(FEA).As a new numerical method,isogeometric analysis(IGA)could integrate pre-processing and analysis processes and has advantages in modeling and analysis.Based on IGA,a new method for numerical simulation of hydraulic structure was developed.A RCC gravity dam model was chosen and the corresponding multi-patch model was built.The simulation results of IGA and FEA were made a contrast from the point of view of accuracy and efficiency.The results show that IGA method could contribute to simple modeling processes,more accurate solutions,faster convergence speed and higher simulation efficiency.It would provide a new and valid method for numerical simulation analysis of complex hydraulic structures.关键词
等几何分析/NURBS基函数/等参元/有限元分析/碾压混凝土重力坝/数值仿真Key words
isogeometric analysis/NURBS basis function/isoparametric element/finite element analysis/RCC gravity dam/simulation accuracy/numerical simulation分类
建筑与水利引用本文复制引用
李明超,张梦溪..水工结构数值仿真等几何分析方法初探[J].水利学报,2018,49(3):291-302,312,13.基金项目
国家优秀青年科学基金项目(51622904) （51622904）
天津市杰出青年科学基金项目(17JCJQJC44000) （17JCJQJC44000）
国家重点基础研发计划(2013CB035903) （2013CB035903）
