混凝土薄板侵彻贯穿问题的SPH数值模拟

Numerical Simulation of Penetration in Concrete Sheet Based on SPH Method

随着混凝土结构强度的不断提高,越来越多的防护工事选择混凝土作为主要建筑材料。在光滑粒子流体动力学方法的基础上,提出了TCK-HJC复合本构模型,对锥形弹刚性侵彻过程中混凝土薄板的变形损伤进行数值模拟,采用拟流体模型处理失效的混凝土碎片,分析了不同侵彻角(0°,60°)下锥形弹侵彻混凝土薄板的变形过程,得到了薄板的压力分布以及失效混凝土碎片的飞散角度,并与实验进行对比。结果表明,数值模拟方法是合理的,为进一步研究脆性材料的力学性能奠定了技术基础。

As the continuous improvement of the strength of concrete structure, more and more protective fortifications have chosen concrete as the main building material. On the basis of the smooth particle hydrodynamics method, the TCK-HJC composite constitutive model is proposed to simulate the deformation damage of the concrete target during the penetration process of the rigid conical projectile, and the pseudofluid model is used to describe the failed concrete fragments. The deformation process of the conical projectile penetrating into the concrete target under different penetration angles (0°, 60°) were analyzed, and the pressure on the surface of the target was also obtained. The scattering angles of the broken concrete fragments were obtained, and the comparison with experiment shows the simulation result is robust and accurate, which lays a technical foundation for further simulation of the mechanical properties of brittle materials.