【摘要】 在大尺寸Hopkinson压杆上,采用一种新的实验技术对混凝土材料实施损伤“冻结”实验,并结合准静态实验,研究了损伤演化与应变和应变率的关系,进而拟合出用于描述混凝土材料的损伤演化方程。研究结果表明,应变率对于混凝土材料损伤演化的影响是非常重要的。更多还原

【Abstract】 A new method which could be called‘freezing in’test of damage in concrete is carried out on SHPB test system. Compared with the quasi-static test data obtained with the MTS test system,the results from SHPB test system show that the damage evolution is of close correlation with the value of strain and strain-rate. Using a fitting program,the equation of damage evolution of concrete is obtained under impact load.更多还原