吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (1): 91-100.doi: 10.13229/j.cnki.jdxbgxb20200715
卫宇璇1(),张明2(),刘佳1,刘硕1,路明雨1,王洪雨1
Yu-xuan WEI1(),Ming ZHANG2(),Jia LIU1,Shuo LIU1,Ming-yu LU1,Hong-yu WANG1
摘要:
研究了基于自动铺丝技术的变刚度复合材料圆柱壳的屈曲性能和缺陷敏感性。基于丝束剪切/重送技术,提出了可以精确模拟圆柱壳面内重叠/间隙区域的简便算法,使有限元模型更加贴近实际制造过程。开展了复合载荷作用下曲线纤维铺层方式对圆柱壳屈曲性能影响的研究,结合Kriging模型和遗传算法,对纤维角度沿环向和轴向线性变化的铺层设计方式进行了优化。最后,利用改进弧长法对不同模态缺陷条件下变刚度复合材料圆柱壳的缺陷敏感性进行了分析。结果表明:在轴压和均匀外压复合作用下,纤维角度沿轴向变化的铺层方式可以有效提高结构的屈曲性能。当带宽为25.4 mm、
中图分类号:
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