高压物理学报2011，Vol.25Issue(6)：533-538,6.
混凝土材料动态力学性能实验与数值模拟研究
Experiments and Numerical Simulations of Concrete Dynamic Mechanical Properties
摘要
Abstract
A light gas gun was used to conduct the dynamic mechanical properties experiments of plain concrete material under three different impact velocities, getting the time-stress curves. Then, numerical calculations were used to simulate concrete＇s light gas gun experiments, comparing the simulation results with experimental results. In this paper the propagation of wave in flyer and target was formulated. Further analysis shows that concrete material has obvious rate-related properties, lag effect and stress wave＇s attenuation features, and all of this is closely related to the evolution of internal damage in material. Concrete material finally forms macro fracture under the interaction of compression wave, Side release effect and reflected tensile wave of left and right free surface. The size of target in the experiment is reasonable, avoiding the effect of side releasing on the test signals of manganin piezoresistive transducer.关键词
轻气炮/素混凝土/实验/数值模拟Key words
light gas gun/plain concrete/experiment/numerical simulation分类
数理科学引用本文复制引用
张柱,赵慧,于晖..混凝土材料动态力学性能实验与数值模拟研究[J].高压物理学报,2011,25(6):533-538,6.基金项目
国家自然科学基金 （）
