带止屈器的复合材料圆柱壳结构屈曲分析及优化
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摘要
针对海洋工程上的复合材料圆柱壳结构,基于有限元软件ABAQUS,利用Python语言编程实现参数化建模、屈曲分析以及在后处理中提取屈曲因子。研究复合材料圆柱壳结构在单独受到轴向压力、侧向压力以及两种压力组合作用下止屈器的位置对屈曲极限强度的影响,并利用遗传算法多参数优化的方法对止屈器的位置进行优化,最终找到最优解。研究结果可以为复合材料圆柱壳结构抵抗屈曲失效的优化设计提供参考。
The parametric modeling, buckling analysis and getting buckling factor in the post process for the composite cylindrical shell structure for offshore engineering are realized by using finite element software ABAQUS and Python programming language. The influence of the buckle arrestor position on the buckling ultimate strength is studied, under the conditions which are axial load, lateral pressure and combinations of the two loads. The position of the buckle arrestors is optimized by the method of multi-objective optimization of genetic algorithm. Finally the multiple sets of optimal solutions are found. The study result offers reference for the optimization design of the composite cylindrical shell structure to resist buckling failure.
The parametric modeling, buckling analysis and getting buckling factor in the post process for the composite cylindrical shell structure for offshore engineering are realized by using finite element software ABAQUS and Python programming language. The influence of the buckle arrestor position on the buckling ultimate strength is studied, under the conditions which are axial load, lateral pressure and combinations of the two loads. The position of the buckle arrestors is optimized by the method of multi-objective optimization of genetic algorithm. Finally the multiple sets of optimal solutions are found. The study result offers reference for the optimization design of the composite cylindrical shell structure to resist buckling failure.
引文
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[12]闫光,韩小进,阎楚良,等.复合材料圆柱壳轴压屈曲性能分析[J].复合材料学报,2013(3):781-787.
[2]KHOT N S.Buckling and Post Buckling Behavior of Composite Cylindrical Shells under Axial Compression[J].AIAA Journal,1970,8(2):229-235.
[3]王珂晟,刘国强,朱晓莹.含初始缺陷的加强复合材料圆柱壳的非线性屈曲分析[J].机械设计与制造,2004(2):63-65.
[4]张建武,徐延海,吴金松.反对称正交铺层剪切圆柱壳在轴压下的屈曲分析[J].上海交通大学学报,2002,36(3):411-415.
[5]肖汉林.复合材料圆柱壳结构动响应及屈曲[D].武汉:华中科技大学,2006.
[6]SUN X,TONG L.Fracture Toughness Analysis of Inclined Crack in Cylindrical Shell Repaired with Bonded Composite Patch[J].Composite Structures,2004,66(1):639-645.
[7]KYRIAKIDES S,BABCOCK C D.On the“Slip-on”Buckle Arrestor for Offshore Pipelines[J].Journal of Pressure Vessel Technology,1980,102(2):188-193.
[8]PARK T D,KYRIAKIDES S.On the Performance of Integral Buckle Arrestors for Offshore Pipelines[J].International Journal of Mechanical Sciences,1997,39(6):643-669.
[9]LEE L H,KYRIAKIDES S.On the Arresting Efficiency of Slip-on Buckle Arrestors for Offshore Pipelines[J].International Journal of Mechanical Sciences,2004,46:1035-1055.
[10]NETTO T A,ESTEFEN S F.Buckle Arrestors for Deepwater Pipelines[J].Marine Structures,1996,9(9):873-883.
[11]孙斌.深海双层管的屈曲传播及止屈控制[D].杭州:浙江大学,2013.
[12]闫光,韩小进,阎楚良,等.复合材料圆柱壳轴压屈曲性能分析[J].复合材料学报,2013(3):781-787.