冲击载荷下混凝土动态力学性能研究进展

Recent advances of dynamic mechanical behavior of concrete under impact loading

系统总结了国内外研究者在混凝土动态抗压强度、抗拉强度和平板冲击实验研究方面所取得的最新进展,在此基础上分析了适用于冲击问题的混凝土本构模型的构建要素。对有代表性的用于数值模拟冲击问题的几个混凝土本构模型,如J-H模型、Forrestal模型、RHT模型和Malvar模型等。从极限面、状态方程以及损伤的定义及其演化等方面进行了深入分析,据此分析总结了混凝土动态本构模型的研究状况及发展趋势。

The recent results of dynamical experiments of uni-axile compression, tension and planar impact on concrete are concluded. Several representative constitutive models such as J-H, Forrestal, RHT and Malvar which recently used in numerical simulation on impact and penetration problems are introduced and studied by the way of analysis on limit surfaces, equation of state, definition and evolvement of damage. And some comments are made on the development trends of dynamic mechanical behavior of concrete at last.