水力发电学报2024，Vol.43Issue(12)：55-63,9.DOI:10.11660/slfdxb.20241206
考虑材料分区填筑分期的土石坝有限元优质网格生成方法
High-quality finite element mesh generation method for earth-rockfill dams with material zoning and phased construction
摘要
Abstract
Few of the previous methods for generating finite element meshes for earth-rockfill dams have taken into account material zoning,construction phasing,and the requirements for horizontal layering during filling,but they are essential for accurate simulations.Manual mesh generation is labor-intensive and time-consuming,resulting in variable quality and poorly formed elements.This paper presents a novel method that considers material zoning and phased filling for mesh generation.It is based on manual processing and initially involves horizontal layering and vertical partitioning of the dam's maximum cross-section to create regular grids with controllable segmentation scales.Then,based on node classification and numbering,it refines regular grids into three-node or four-node planar elements through implementing several new techniques,such as node migration,element identification,merging,collapsing,and splitting.Our FEM code developed using this method is efficient in generating two-dimensional high-quality finite element meshes for the maximum cross-section of the Jiangpinghe dam,and has a potential to extend to three-dimensional mesh generation.关键词
土石坝/有限元法/材料分区/填筑分期/网格生成Key words
earth-rockfill dam/the finite element method/material zoning/phased construction/mesh generation分类
水利科学引用本文复制引用
孟歆,周伟,刘全,庞小荣,陈汤卓逸,陈治光..考虑材料分区填筑分期的土石坝有限元优质网格生成方法[J].水力发电学报,2024,43(12):55-63,9.基金项目
国家自然科学基金雅砻江联合基金重点项目(U23B20149) （U23B20149）
云南省重点研发计划(202202AF080003 （）
202203AA080009) （）
