Abstract A novel analytical model has been developed to predict the mean crushing force of square carbon fibre reinforced plastic (CFRP) tubes subjected to axial crushing. The model has captured the experimentally observed major energy dissipating mechanisms of CFRP tubes under axial compression, i.e. crack propagation, transverse shearing and friction. Transverse shearing has been taken into account for the first time in this model. Quasi-static compressive tests have been conducted on 16 square CFRP tubes with various side lengths and wall thicknesses to determine their mean crushing forces. The discrepancy between analytically predicted and experimentally measured mean crushing forces of these square CFRP tubes is no more than 7%. Moreover, the proposed analytical model is very simple with only several parameters, which can be determined via relatively simple experimental tests.

中文翻译：

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受轴向压缩的方形CFRP管的分析模型

摘要 开发了一种新的分析模型来预测方形碳纤维增强塑料 (CFRP) 管受到轴向挤压的平均挤压力。该模型捕获了实验观察到的CFRP 管在轴向压缩下的主要能量耗散机制，即裂纹扩展、横向剪切和摩擦。该模型首次考虑了横向剪切。对具有不同边长和壁厚的 16 个方形 CFRP 管进行了准静态压缩试验，以确定它们的平均压碎力。这些方形 CFRP 管的分析预测和实验测量的平均压碎力之间的差异不超过 7%。此外，所提出的分析模型非常简单，只有几个参数，