The ballistic impact behavior of hybrid 3-dimentional woven composites (3DWC) is predicted through a novel numerical modeling technique and validated the outcome through experimental data. Continuum shell elements with Hashin failure criterion and cohesive surface contact algorithm with traction separation law are used to predict the damage behavior and failure mechanisms during the impact process at interply and intraply levels. Z-yarns are represented by the connector elements with uniaxial behavior having stress-based failure criterion. The proposed methodology predicted the different damage mechanisms during the impact process in comparison with the experimental data and estimated the residual velocities with acceptable accuracy. Different failure mechanisms incurred due to the hybrid nature of the material are also captured by the numerical simulation and the effect of z-yarns are truly depicted by the use of simple 1D elements over the different phases of perforation process. Overall, the finite element (FE) methodology by using simplest form of the elements, their constitutive and damage behavior gives promising results by sufficiently reducing the computational cost.

通过新颖的数值建模技术预测了杂化3维编织复合材料（3DWC）的弹道冲击行为，并通过实验数据验证了结果。具有Hashin破坏准则的连续壳单元和具有牵引力分离定律的内聚表面接触算法被用来预测在冲击过程中在内部和内部的破坏行为和破坏机理。Z型纱线由具有基于应力破坏准则的单轴行为的连接器元件表示。与实验数据相比，所提出的方法可以预测冲击过程中的不同损伤机理，并以可接受的精度估算残余速度。通过数值模拟还可以捕获由于材料的混合性质而导致的不同破坏机制，并且通过在穿孔过程的不同阶段使用简单的1D元素可以真实地描绘出z纱的效果。总体而言，通过使用最简单的元素形式，其本构和破坏行为的有限元（FE）方法可通过充分降低计算成本来提供有希望的结果。