To reveal the failure of carbon fiber reinforced composite (CFRC) anisogrid lattice cylinders, a multi-failure theory is proposed, including global buckling, local in-plane buckling, local out-of-plane buckling, Euler buckling and material failure. The global buckling is analyzed by Ritz buckling analysis through the equivalent continuum method and verified by the finite element modeling (FEM) covering different representative sizes and previous experimental results. A parametric analysis is performed to reveal the effects of the rib thickness, the rib height and the number of helical ribs and hoop ribs, on the critical load and failure modes. Failure maps are deduced to figure out the optimal route for lightweight design of the CFRC anisogrid cylinder. The theory will serve as a reference to design composite anisogrid lattice cylinders with high specific strength and stiffness.

为了揭示碳纤维增强复合材料（CFRC）等网格格栅的失效，提出了一种多失效理论，包括整体屈曲，局部平面内屈曲，局部平面外屈曲，欧拉屈曲和材料失效。整体屈曲通过等效连续谱方法通过Ritz屈曲分析进行分析，并通过涵盖不同代表尺寸和先前实验结果的有限元建模（FEM）进行验证。进行参数分析以揭示肋骨厚度，肋骨高度以及螺旋肋骨和环肋骨的数量对临界载荷和破坏模式的影响。推导了故障图，以找出CFRC等静压缸轻量化设计的最佳途径。