混凝土等效材料特性的数值研究

Numerical derivation of equivalent material properties of concrete

根据概率分布函数随机生成5个元胞作为特征胞,利用细观统计力学方法对5个元胞进行模拟,分别得到5个元胞的材料等效特性,并根据这5个元胞的等效材料特性生成新的混凝土结构模型。为了验证新的混凝土模型的有效性,模拟了弹丸侵彻混凝土靶板的动力学响应与损伤,从而验证了等效材料特性研究在混凝土数值模型中使用的效率和准确性。

Five basic cells were generated according to the probability distribution function as feature cells,numerical simulation of laboratory tests were conducted to derive the equivalent material properties of the five basic cells of concrete by use of meso-statistical mechanics,and a new concrete model was generated according to the equivalent material properties of the five basic cells.To check the validity of the new model of derived equivalent material properties,the dynamic response and damage of the projectile penetration concrete was modeled.The efficiency and accuracy of using the derived equivalent material properties in numerical modeling of concrete were demonstrated.