气体炮冲击高强混凝土试验的数值模拟

Numerical study of high strength concrete subjected to the gas gun impacting test

采用一级气体炮和锰铜压力计测试技术,对C100级混凝土试件在一维应变条件下的冲击特性进行了实验测量,通过数值模拟得到了混凝土的高压状态方程参数,研究了混凝土的动态力学性能.由于冲击过程非常短暂,层裂往往发生在试件内部,导致层裂现象很难观测到,通过数值模拟,文章展现了试验没有观测到的层裂现象.

The shock properties of CIO0 concrete is investigated by gas gun planar impact technique. The man- ganin pressure gauge is used to measure the pressure-time curves of the specimen. The parameters of high-pres- sure equation are obtained by the numerical simulation. Because the impact process is very short, at the same time, the spallation phenomenon usually occurred in the specimen, it is difficult to observe the trial of spallation phenomenon. Using the numerical simulation, the spall phenomenon is observed in the paper.