Research Initiation: Three-Dimensional Fracture Analysis of Rubber Composite Structures

橡胶复合材料的失效机理非常复杂， 在自然界是三维的。 该项目的重点是 开发三维有限元模型，包括 几何和材料非线性、各向异性和双模 表征界面/层间的材料行为 橡胶复合材料的失效。 三维撕裂能公式 计算，表征不同 界面失效和裂纹扩展路径预测将 发展。 重点将放在简单的 模型和精度，并使用计算机图形来表示 更好地理解橡胶的界面失效机制 复合结构 得到的有限元结果将是 使用基准问题和可用的实验数据进行验证。

Failure mechanisms of rubber composites are extremely complex and three dimensional in nature. This project focuses on the development of a 3-D finite element model which includes geometrical and material nonlinearities, anisotropic, and bimodular material behavior for characterizing the interface/interlaminar failures in rubber composites. Formulations for 3-D tearing energy computations, failure criterion for characterizing different interface failures and prediction of crack propagation path will be developed. Emphasis will be placed on the simplicity of the model and accuracy, and the use of computer graphics to represent the interface failure mechanisms for better understanding of rubber composite structures. The finite element results obtained will be validated using benchmark problems and available experimental data.