宁夏工程技术2023，Vol.22Issue(4)：328-336,9.
等效参数替换法构建混凝土界面过渡区的数值模型研究
Research on the Numerical Model Construction of Concrete Interfacial Transition Zone Using Equivalent Parameter Substitution Method
摘要
Abstract
The thickness of the concrete interfacial transition zone is in the micrometer range.In order to achieve the application of the ultra-thin interfacial phase in the mesoscopic simulation of concrete,a mixed division of tetrahedral and pentahedral meshes was carried out for the three-dimensional three-phase model of concrete.Based on the consistent mechanical transmission results of tetrahedrons and pentahedrons,the computational parameters of the HJC constitutive relation in the finite element model were replaced.The results show that the finite element calculation results of the mixed division equivalent model are consistent with those of the all-tetrahedral division model,indicating that the mixed mesh modeling is feasible.Ansys/LS-DYNA finite element numerical simulations were carried out at different impact velocities,and the numerical simulation damage modes and stress-strain curves obtained by the equivalent parameter substitution method for the interphase of micrometer-level thickness fit well with the experimental results.关键词
混凝土/微米/界面过渡区/等效参数替换/数值模拟Key words
concrete/micron/interfacial transition zone/equivalent parameter substitution/numerical simulation分类
土木建筑引用本文复制引用
刘峰,刘海峰,杨淑雁,刘一江..等效参数替换法构建混凝土界面过渡区的数值模型研究[J].宁夏工程技术,2023,22(4):328-336,9.基金项目
宁夏自然基金项目(2018AAC03030,2020AAC03044) （2018AAC03030,2020AAC03044）
