计算力学学报2017，Vol.34Issue(1)：49-56,8.DOI:10.7511/jslx201701006
基于联合有限元-离散元的混凝土重力坝破坏三维仿真模拟
Three-dimensional simulation of failure of a concrete gravity dam using the Combined Finite-Discrete Element Method
摘要
Abstract
The three-dimensional failure pattern and failure process of concrete gravity dams under the action of earthquakes have great influences on safety of dams in hydraulic engineering.A three-dimensional mathematical model based on the Combined Finite-Discrete Element Method (FDEM) was established for solid materials.The Single/Smeared model was introduced into the FDEM model as the damage constitutive law of concrete material.After verification,the mathematical model was used to simulate the three-dimensional failure of a concrete gravity dam under earthquakes.Numerical simulation results show that the FDEM model is capable of effective reproduction of both the failure pattern and the failure threshold conditions of concrete dam.It has the advantage of well combination of the continuous deformation and discontinuous rupture in the simulation.A series of numerical simulations were carried out for different cases,based on which,the mesh resolution's influence on the failure threshold,failure pattern and computational efficiency was investigated.The research achievements can provide valuable references for the earthquake-proofing design of large dams.关键词
混凝土重力坝/联合有限元-离散元/Single/Smeared破坏模型/三维模拟Key words
concrete gravity dam/Combined Finite-Discrete Element Method/Single/Smeared crack model/three-dimensional simulation分类
建筑与水利引用本文复制引用
申振东,许栋,白玉川,及春宁,AnteMunjiza..基于联合有限元-离散元的混凝土重力坝破坏三维仿真模拟[J].计算力学学报,2017,34(1):49-56,8.基金项目
国家自然科学基金创新研究群体项目(51321065) （51321065）
国家自然科学基金(51579175,51009105) （51579175,51009105）
NSFC-广东联合基金(第二期)超级计算科学应用研究专项和国家超级计算广州中心资助项目. （第二期）
