SHPB TEST ON DYNAMICAL MECHANICAL BEHAVIOR OF CONCRETE WITH HIGH TEMPERATURE

摘要：

An experimental system is designed by combining the split Hopkinson pressure bar (SHPB) with microwave heating device,based on numerical simulation and stress wave theory,availability of the experiment technique is analyzed.Tests of concrete whose temperature changes from room temperature to 650℃ and impact velocity from 5m/s to 12m/s are completed and for the first time high-temperature dynamical damaging phenomena of concrete are obtained.Based on data analysis,the dynamical mechanical behavior of concrete with high temperature is affected by not only the strain rate effect whose influence keeps on decreasing with temperature increasing,but also the high temperature weakening effect.And the strain rate hardening effect is coupled with high temperature weakening effect,but the latter has greater influence.

关键词： concrete high temperature SHPB Dynamic mechanical behavior

作者: J.Bin X.Q.Chen P.Liu L.Wang

作者单位: Department of Civil Engineering and Architecture,Southwest University of Science and Technology,MianYang,621010,SiChuan,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 1059-1062

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）