爆炸与冲击2018，Vol.38Issue(4)：925-930,6.DOI:10.11883/bzycj-2016-0377
基于分形理论的高强混凝土动态损伤本构关系
Dynamic damage constitutive relationship of high strength concrete based on fractal theory
摘要
Abstract
Based on the fractal damage evolution law of high strength concrete (HSC) specimen by the SHPB impact test, we deduced the patterns of the fractal damage variables of HSC, and calibrated the fractal dimension range of the HSC cracks. Then following the ZWT model, and in combination with the strain rate dependence, dynamic damage characteristic and quasi-constant strain rate, we obtained the HSC dynamic damage constitutive equation with the fractal damage evolution taken into account Finall. Our study verified the effectiveness of the constitutive equation by C60 and C80 stress-strain curves at four different strain ratios, and the theoretical curves matched well with the experimental ones.关键词
分形理论/高强混凝土/分离式霍普金森杆/动态损伤/本构关系Key words
fractal theory/high strength concrete/SHPB/dynamic damage/constitutive relationship分类
数理科学引用本文复制引用
焦楚杰,李习波,程从密,李从波..基于分形理论的高强混凝土动态损伤本构关系[J].爆炸与冲击,2018,38(4):925-930,6.基金项目
国家自然科学基金项目(51778158,51478128,51278135) （51778158,51478128,51278135）
广东省水利科技创新重点项目(2017-32) （2017-32）
住房和城乡建设部科研开发项目(2010-K3-27,2010-k4-18) （2010-K3-27,2010-k4-18）
广州大学重点科技项目培育项目(2015) （2015）
