In this paper, a finite element (FE) model which simulates damage extent of CFRP laminate subjected to low velocity face-on impact is proposed. The validity of the model is demonstrated by comparing experimental and numerical results for two different CFRPs with different stacking sequence and boundary conditions. Experimental damage extent were obtained from the drop-weight test and non-destructive inspections (C-scan, radiograph and X-ray CT). Numerical results were obtained from FE analyses done on Abaqus/Explicit 2016. In the present model, each damage mode is modeled separately. Fiber damage is modeled by smeared crack model (SCM). In-plane ply cracks are modeled by the enhanced continuum damage mechanics (ECDM) model, which is composed of continuum damage mechanics (CDM) and SCM. Delamination between laminae is modeled by cohesive behavior based on the contact formulation. For both CFRPs, numerical results obtained from the present model show reasonable agreement with experimental results.

本文提出了一种有限元（FE）模型，用于模拟CFRP层压板在低速面对面碰撞时的损伤程度。通过比较两种具有不同堆叠顺序和边界条件的不同CFRP的实验结果和数值结果，证明了该模型的有效性。从跌落重量测试和无损检查（C扫描，X射线照片和X射线CT）获得实验损伤程度。从在Abaqus / Explicit 2016上进行的有限元分析中获得了数值结果。在本模型中，每种损伤模式都是单独建模的。纤维损伤通过涂污裂纹模型（SCM）进行建模。平面帘布层裂纹由增强的连续损伤力学（ECDM）模型建模，该模型由连续损伤力学（CDM）和SCM组成。层之间的分层是基于接触公式的内聚行为建模的。对于两种CFRP，从本模型获得的数值结果均与实验结果合理吻合。