高压物理学报2018，Vol.32Issue(1)：104-110,7.DOI:10.11858/gywlxb.20170532
SHPB混凝土实验中试件尺寸的影响
Influence of Specimen Size in SHPB Tests on Concrete
摘要
Abstract
The split Hopkinson pressure bar (SHPB) tests are often conducted to obtain the dynamic compressive strengths of concrete-like materials which need to be interpreted or analyzed correctly as these data are very important for the construction of reliable constitutive equations used in numerical simulations.In the present work,a numerical study is performed on the influence of specimen size on concrete in SHPB tests using a rate-independent material model.A new empirical equation for the dynamic increase factor due to inertia (confinement) effect is also proposed which took account of specimen size effect through its volume.It is shown that the empirical formula agrees well with the numerical results for the SHPB tests on concrete with different specimen sizes,and the dynamic increase factor due to inertia (confinement) effect increases with the increase of specimen size.关键词
分离式霍普金森压杆实验/混凝土/惯性(约束)效应/试件尺寸效应/数值模拟Key words
SHPB test/concrete/inertia (confinement) effect/specimen size effect/numerical simulation分类
数理科学引用本文复制引用
赵福祺,徐沛保,文鹤鸣..SHPB混凝土实验中试件尺寸的影响[J].高压物理学报,2018,32(1):104-110,7.基金项目
National Natural Science Foundation of China (11572317) （11572317）
