Stability performance of cylindrical shells and providing a potential method to enhance the buckling stability of these structures are major concerns for designers. Carbon Fiber Reinforced Polymer (CFRP) composites are promising materials for application in the design and retrofit of such thin-walled structures. On this basis, this paper presents a comprehensive numerical study on the buckling behavior of CFRP-strengthened cylindrical shells under uniform external pressure and evaluates the effects of different parameters in the strengthening process. Numerous CFRP-strengthened cylindrical shells with distinct reinforcement layouts in three groups of models having different slenderness ratios are investigated through nonlinear stability analyses using the ABAQUS finite element package. The application of all considered reinforcement layouts for strengthening purposes is found to be effective in improving the buckling stability of cylindrical shells. It is demonstrated that the circumferential reinforcement of the middle region of the shell using CFRP strips with [0°] fiber angle (in the hoop direction), in particular, is the most effective approach for improving the buckling performance of the CFRP-strengthened cylindrical shells under uniform external pressure.

圆柱壳的稳定性能以及提供增强这些结构屈曲稳定性的潜在方法是设计人员的主要关注点。碳纤维增强聚合物（CFRP）复合材料是用于此类薄壁结构的设计和翻新的有前途的材料。在此基础上，本文对CFRP加固圆柱壳在均匀外压下的屈曲行为进行了全面的数值研究，并评估了不同参数对加固过程的影响。通过使用ABAQUS有限元软件包的非线性稳定性分析，研究了三组具有不同细长比的CFRP加固圆柱壳，它们具有不同的加固布局。已经发现，将所有考虑的钢筋布置用于加强目的都可有效地改善圆柱壳的屈曲稳定性。结果表明，使用具有[0°]纤维角（在圆周方向上）的CFRP条对壳的中间区域进行周向加固是提高CFRP加固圆柱体屈曲性能的最有效方法。炮弹在均匀的外部压力下。