计算力学学报Issue(2)：248-253,6.DOI:10.7511/jslx201402018
均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究
Numerical study on failure process of accropode under the impact of uniform flow
摘要
Abstract
Accropode is considered as an important breakwater armour block ,and the failure process is closely related to impact force of flow .Based on Continuum-based Discrete Element Method (CDEM ) , and by introducing FVM algorithm and semi-spring & semi-edge combined contact model ,the precise calculation of element deformation and quick update of element contact under large displacement are real-ized .According to modified CDEM above mentioned ,and by applying gradually increased dynamic face force on accropode surface with the direction of flow ,the numerical simulations are taken .The crack process of single accropode and instability process of accropodes group under impact load of uniform flow are studied .Numerical results show that ,the main crack mode of single accropode is root fracture ,with the crack velocity 20~24 m/s in different impact direction ;and the main instability mode of accropodes group is single accropode jumping out of group ,with the instability velocity 4~12 m/s in different ton-nage .关键词
CDEM/FVM/联合接触模型/防波堤/扭王字块/断裂失稳模式Key words
CDEM/FVM/combined contact model/breakwater/accropode/failure mode分类
数理科学引用本文复制引用
冯春,李世海,赵颖,刘晓宇..均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究[J].计算力学学报,2014,(2):248-253,6.基金项目
国家重点基础研究发展计划（973）（2010CB731506）；国家科技支撑计划（2012BAK10B00）；国家自然科学基金青年基金（11002146）资助项目． （）
