复合材料冲击损伤数值仿真模型评估

本文对低速冲击下复合材料结构损伤的数值仿真模型进行了分类和评估。低速冲击模型由冲击过程模型和材料损伤演化模型两类子模型组合而成,列出了每类模型的关键要素及其处理方法,对常用的组合进行了整理与评述,并列出了文献中出现频率较高的6种仿真模型。完成了6种模型的两个算例的数值评估,评估结果表明：对于正交层合板算例6个模型均可较准确地预测损伤形状和面积；对于角铺设层合板算例,采用Puck准则、考虑剪切非线性、基于能量释放率的模型得到的分层损伤形貌更接近于试验结果。

A survey of numerical simulation models for impact damage of composite materials

In this paper, the numerical simulation models of composite structural damage under low velocity impact are classified and evaluated. The low-velocity impact model is composed of two kinds of sub-models: the impact process model and the material damage evolution model. The key elements of each type of model and their processing methods are listed. The commonly used combinations are collected and reviewed, and six simulation models with high frequency in the literatures are listed. The numerical evaluation of two examples with the listed six models was completed, and the results show that for orthogonal laminated plates, the damage shapes and areas given by the six models can be predicted accurately, but for the angle-ply laminated plate, the delamination damage morphology achieved by the model of Puck criterion, considering shear nonlinearity and based energy release rate is closer to the experimental results.