This paper presents a study of low velocity impact on unidirectional composite specimens, a plate and an aerospace stiffened panel following the building block approach. Simplified approaches for a quick estimation of impact behavior description are used to define the impact dynamic response and the existence of delamination at coupon level, while numerical analysis models using ABAQUS/Explicit software and experimental results are described in detail and compared at all levels. Significant effort was made in the use of different types of elements and damage models for matrix cracking, fiber breakage and cohesive elements for delamination between plies of composite. The results obtained show that simplified approaches give an effective initial understanding of the impact response helping the interpretation of numerical and experimental results. In addition, the comparison of different methods of simulation demonstrated that continuum shell elements with induced cohesive elements present the most accurate results regarding the impact force, contact duration, energy absorption and damage extension.

本文介绍了对低速冲击的单向复合材料试样，板和航空航天加强板的构建方法的研究。用于快速评估冲击行为描述的简化方法用于定义冲击动力学响应和试样级别的分层，同时详细描述了使用ABAQUS / Explicit软件的数值分析模型和实验结果，并在各个级别进行了比较。在使用不同类型的元素和损伤模型进行基质开裂，纤维断裂和粘结性元素进行复合材料层间分层方面，我们付出了巨大的努力。获得的结果表明，简化的方法可以有效地初步了解冲击响应，有助于解释数值和实验结果。