纤维交叉缠绕复合材料圆柱壳的屈曲分析  

Buckling Analysis of Fiber Crossover Composite Cylindrical Shells

作　　者：沈创石 SHEN Chuangshi(Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院,河南郑州450046

出　　处：《郑州航空工业管理学院学报》2024年第5期27-35,共9页Journal of Zhengzhou University of Aeronautics

摘　　要：考虑纤维交叉情况,建立纤维缠绕圆柱壳屈曲有限元分析模型,通过算例验证模型和计算方法的有效性。采用该模型研究了圆柱壳的屈曲载荷随缠绕角、厚径比、长径比等参数的变化情况,并分析计算纤维交叉起伏对圆柱壳屈曲性能的影响。计算结果表明:缠绕复合材料圆柱壳的屈曲临界载荷和屈曲模态与缠绕角、长径比、缠绕层数有很大的关系。在一些特定的情况下,如缠绕角在[10°—30°]范围、长径比较小或者缠绕层数增加时,纤维交叉对屈曲临界载荷有明显的影响。This study considers the situation of fiber crossover and establishes a finite element analysis model for the buckling of fiber-wound cylindrical shells.The effectiveness of the model and computational methods is verified through numerical examples.Using this model,the study investigates the variation of buckling loads of cylindrical shells with parameters such as winding angle,thickness-to-diameter ratio,and length-to-diameter ratio,and analyzes the influence of fiber crossover on the buckling performance of the shells.The computational results show that the buckling critical load and mode of fiber-wound composite material cylindrical shells are significantly related to the winding angle,length-to-diameter ratio,and number of windings.Under specific conditions,such as when the winding angle is in the range of[10°-30°],the length-to-diameter ratio is relatively small,or the number of windings increases,fiber crossover has a noticeable impact on the buckling critical load.

关 键 词：纤维交叉 缠绕复合材料 屈曲 

分 类 号：TB33[一般工业技术—材料科学与工程]