In the presented paper, the phenomenon of failure of axially compressed thin-walled composite structures with channel shape was analysed. The tested thin-walled structures were made of CFRP composite using the autoclave method. In the research, experimental tests on actual columns and advanced numerical calculations using the finite element method were conducted. The numerical calculations were carried out in the ABAQUS® software. The axial compression tests of thin-walled structures made of composite materials were conducted in the full load range, taking into account the failure phenomenon. During the experimental tests, post-critical equilibrium paths were recorded with the simultaneous recording of acoustic emission signals. This approach made it possible to carry out further analysis of the failure of the composite material. Numerical simulations were conducted using progressive failure analysis (PFA), based on the damage initiation (Hashin’s criterion) and the damage evolution (energy criterion). Additionally, the cohesive zone model (CZM) was used in numerical studies. A measurable effect of the conducted numerical research was the analysis of the failure phenomenon in the context of progressive failure analysis (PFA) and the delamination phenomenon accompanying the loss of load capacity (CZM), which was the main novelty in relation to the current works in the literature on the subject. The obtained results of the numerical tests showed a high compliance with the results of the experimental studies.

在本文中，分析了具有通道形状的轴向压缩薄壁复合结构的破坏现象。测试的薄壁结构是使用高压釜法由CFRP复合材料制成的。在研究中，对实际柱进行了实验测试，并使用有限元方法进行了高级数值计算。数值计算在ABAQUS®软件中进行。考虑到破坏现象，在复合材料制成的薄壁结构的轴向压缩试验是在满负荷范围内进行的。在实验测试期间，记录了临界后的平衡路径，同时记录了声发射信号。这种方法使得可以对复合材料的破坏进行进一步分析。基于损伤开始（Hashin准则）和损伤演化（能量准则），使用渐进式失效分析（PFA）进行了数值模拟。另外，在数值研究中使用了粘聚区模型（CZM）。进行的数值研究的可测量效果是在渐进式故障分析（PFA）的背景下分析故障现象以及伴随负载能力丧失的分层现象（CZM），这是当前工程的主要新颖之处在有关该主题的文献中。数值测试的结果表明与实验研究的结果高度吻合。另外，在数值研究中使用了粘聚区模型（CZM）。进行的数值研究的可测量效果是在渐进式故障分析（PFA）的背景下分析故障现象以及伴随负载能力丧失的分层现象（CZM），这是当前工程的主要新颖之处在有关该主题的文献中。数值测试的结果表明与实验研究的结果高度吻合。另外，在数值研究中使用了粘聚区模型（CZM）。进行的数值研究的可测量效果是在渐进式故障分析（PFA）的背景下分析故障现象以及伴随负载能力丧失的分层现象（CZM），这是当前工程的主要新颖之处在有关该主题的文献中。数值测试的结果表明与实验研究的结果高度吻合。这是有关该主题文献中当前作品的主要新颖之处。数值测试的结果表明与实验研究的结果高度吻合。这是有关该主题文献中当前作品的主要新颖之处。数值测试的结果表明与实验研究的结果高度吻合。