煤矿安全2017，Vol.48Issue(12)：9-11,15,4.DOI:10.13347/j.cnki.mkaq.2017.12.003
煤样变形破坏过程中全应变场分布规律
Distribution of the Whole Strain Field During the Deformation and Failure of Coal Samples
摘要
Abstract
In order to study the strain distribution of the whole field of coal deformation and failure in the process of uniaxial compression tests on coal samples,we use TYJ-500KN computer controlled electro-hydraulic servo shear rheological test system and XTDIC 3D optical digital speckle system.According to the calculation results of the digital speckle,displacement evolution loading process of coal samples is studied.We get the conclusion that when the shear failure is in coal sample,digital speckle image displacement concentration appears earlier,and the displacement area is obvious.Through monitoring the whole process of coal loading failure,the digital speckle system can accurately predict the destruction of the form and the location of the sample.Therefore,for the destruction of coal samples,the analysis of digital speckle monitoring data can be used to predict the damage position of the sample,and it is also important to explore the location and distribution of coal sample damage.关键词
数字散斑/单轴破坏/位移集中带/加载全过程/位移演化Key words
digital speckle/uniaxial failure/displacement concentration zone/loading full process/displacement evolution分类
矿业与冶金引用本文复制引用
肖福坤,于涵,刘刚..煤样变形破坏过程中全应变场分布规律[J].煤矿安全,2017,48(12):9-11,15,4.基金项目
国家自然科学基金资助项目(51574115,51374097) （51574115,51374097）
