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为研究水泥基粒状复合材料的物理力学性能,采用一种自编的特殊算法生成任意形状的单个复合材料骨料颗粒,利用HADES堆积程序来形成材料结构(HADES是模拟任意形状的颗粒碰撞和堆积的程序).在此基础上加入骨料颗粒与水泥基之间的界面过渡区(ITZ),并采用专门的网格划分工具对粗骨料、水泥浆以及界面过渡区进行网格划分,最后进行有限元计算来得到水泥基复合材料的力学性质.以混凝土作为一种典型的水泥基复合材料进行模拟分析,得到不同骨料颗粒成份下混凝土弹性模量值为14.3GPa到22.9GPa,结果表明上述数值模拟方法可有效的对三相材料(水泥基、界面过渡区、骨料颗粒)构成的混凝土弹性模量进行预测.
In order to study the physical and mechanical properties of cement-based grained composites, a self-designed special algorithm was used to generate a single composite material aggregate of arbitrary shape. The HADES deposition program was used to form the material structure (HADES simulates the collision and accumulation of particles of arbitrary shape ) On the basis of which an interfacial transition zone (ITZ) between aggregate particles and cementitious base was added and a gridding tool was used to mesh the coarse aggregate, grout and interface transition zone, finally The mechanical properties of cement-based composites were calculated by finite element method.With concrete as a typical cement-based composite material, the elastic modulus of concrete under different aggregate components was calculated to be 14.3GPa to 22.9GPa. The results show that The above numerical simulation method can effectively predict the elastic modulus of concrete composed of three-phase materials (cement-based, interfacial transition zone and aggregate particles).