硅酸盐通报2018，Vol.37Issue(6)：1903-1907,1913,6.
冲击荷载下EPS混凝土细观动态损伤分析
Meso-dynamic Damage of EPS Concrete under Shock Loading
摘要
Abstract
It simulated the dynamic responses of EPS concrete models in impact loading that resembled with diverse proportions of EPS beads by FEM software based on random distribution of weibull in foundation of dynamical shocking experiments.According to the aspects of proportion of EPS beads, interfaces between EPS particle and cement, degree of damage and fracture rate, the diversities of failure situation and the dynamic properties of EPS concrete with EPS beads proportions were demonstrated.The study results showed that the deformation's capacities were improved overall, which made the failure styles evolved from quasi-brittleness to ductility and extrusion flow damage; and the values of damage degree magnified while the ultimate values of strain could be enhanced by several times; and the time of summit value for fracture rates was decreased by half-times and the curve of fracture rates was like hump with the increases of EPS beads proportion and the summation of interfaces between EPS beads and cement.关键词
EPS混凝土/随机分布/冲击荷载/细观动力学/损伤分析Key words
EPS concrete/random distribution/shock loading/meso-dynamics/damage estimation分类
矿业与冶金引用本文复制引用
胡俊,任建伟,吴德义..冲击荷载下EPS混凝土细观动态损伤分析[J].硅酸盐通报,2018,37(6):1903-1907,1913,6.基金项目
国家自然科学基金(51478002 （）
51674005) （）
安徽省教育厅高校自然科学研究重点项目(KJ2017A486) （KJ2017A486）
