Constitutive ply damage modeling, FEM implementation, and analyses of laminated structures
Constitutive ply damage modeling, FEM implementation, and analyses of laminated structures
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本构层损伤建模、FEM 实施和层合结构分析
DOI：
10.1016/j.compstruc.2007.04.021
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发表时间：
2008
影响因子：
4.7
通讯作者：
H. Pettermann
中科院分区：
文献类型：
--
作者：
C. Schuecker;H. Pettermann
本文研究了纤维增强聚合物层合板的渐进损伤模型，并将其作为本构材料法则应用到有限元程序中。目标是预测由于基体主导的失效模式（“基体开裂”）造成的损伤演变和材料退化。在前人的工作中，提出了基于Puck假设的层层破坏机制的层级连续损伤模型。该模型预测了损伤材料的完全弹性张量的演变，能够捕捉到横向压缩下的刚度恢复和倾斜开裂的影响。在目前的工作中，该损伤模型适用于任意加载路径，并在有限元方法中实现，以分析复杂结构并研究其损伤行为，包括损伤引起的载荷重分布。为了展示损伤模型在结构分析中的一些关键特征和应用，将其应用于单单元分析和模拟裸眼压缩试验，并将结果与文献中的实验数据进行比较。
The present work is concerned with the modeling of progressive damage in fiber reinforced polymer laminates and its implementation into a finite element code as constitutive material law. The objective is to predict damage evolution and material degradation due to matrix dominated failure modes (“matrix cracking”). In a previous work, a ply-level continuum damage model based on ply failure mechanisms postulated by Puck has been presented. This model predicts the evolution of the complete tensor of elasticity for the damaged material and is able to capture the effects of stiffness recovery and slanted cracking under transverse compression. In the current work, this damage model is adapted for arbitrary loading paths and implemented within the finite element method in order to analyze complex structures and study their damage behavior including load redistribution due to damage. To demonstrate some key features and the application of the damage model in structural analysis, it is applied in a single element analysis as well as in the simulation of Open Hole Compression tests for which results are compared to experimental data from the literature.