Abstract To get a strong, stiff and weight efficient cylindrical shell, carbon fiber reinforced corrugated-core sandwich cylinders (CSCs) were designed and made. The corrugated-core is made up of corrugated cylindrical shell and manufactured by mould hot pressing method. Split forming and integral filament winding forming methods were applied to make the CSC separately. Effects from non-wrapped and wrapped cylindrical ends were investigated individually. Uniaxial compression tests were performed to reveal the strength and failure mode. Split forming method makes the CSC stiffer but integral filament winding forming method makes the CSC stronger. With non-wrapped ends, the cylinders fail at end delamination and the load carrying capacity is 289.7 kN and 373.7 kN, respectively. The load is improved to 415.6 kN and 491.4 kN, respectively, when the cylinder is end-wrapped. Skin fracture controls the failure of the CSCs with wrapped ends and makes them stronger. Meanwhile, the load carrying ability of the CSC is stronger than lattice truss-core sandwich cylinders (LTSCs). Benefiting from the high axial load carrying ability of the CFRC corrugated shell, strength of the designed CSC failing at skin fracture improves at a magnitude of 50% compared with the referenced LTSC.

中文翻译：

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复合波纹芯夹层圆柱体的制作与试验

摘要 为了获得坚固、刚性和重量轻的圆柱壳，设计并制造了碳纤维增强波纹芯夹层圆柱体（CSCs）。波纹芯由波纹圆柱壳组成，采用模具热压法制造。采用分体成型和整体丝绕成型方法分别制作CSC。分别研究了未缠绕和缠绕圆柱端的影响。进行单轴压缩试验以揭示强度和破坏模式。分体成型法使 CSC 更硬，但整体长丝缠绕成型法使 CSC 更坚固。对于非缠绕端，气缸在端部分层时失效，承载能力分别为 289.7 kN 和 373.7 kN。载荷分别提高到 415.6 kN 和 491.4 kN，当圆柱体被端部包裹时。皮肤断裂控制了末端缠绕的 CSC 的失效并使其更坚固。同时，CSC 的承载能力强于格构桁架芯夹层圆柱体（LTSCs）。受益于 CFRC 波纹壳的高轴向承载能力，与参考 LTSC 相比，设计的 CSC 在蒙皮断裂处失效的强度提高了 50%。