摘要
飞机中有大量加筋壁板结构,利用复合材料取代传统金属材料制造加筋壁板结构可减轻重量,提升性能。为研究轴压载荷下不同蒙皮参数对复合材料加筋壁板结构的屈曲与后屈曲行为的影响,通过ABAQUS建立了有限元模型。首先采用特征值法进行屈曲分析,然后采用ABAQUS中动力显式(dynamic explicit)建立模型模拟,最后进行轴压试验验证。结果表明:有限元仿真值与试验值相差不大,即该模型求解方法可以准确预测其后屈曲载荷;蒙皮参数的不同使得加筋壁板结构的屈曲模态发生改变,并且对后屈曲行为有明显影响,显著改变了加强筋结构的承载能力。研究结果对优化复合材料加筋壁板的承载能力与提高飞机结构设计效率具有重大意义。
There are a large number of stiffened panels in the aircraft,and the use of composite materials to replace traditional metal materials to make stiffened panels can reduce weight and improve performance.In order to study the effect of different skin parameters on the buckling and post-buckling behavior of composite stiffened panels under axial compression loads,a finite element model was established based on ABAQUS.First,the eigenvalue method is used for buckling analysis,then the ABAQUS dynamic explicit is used for quasi-static simulation analysis(post-buckling analysis),and finally the axial compression test is performed.The results show that the finite element analysis results are roughly consistent with the experimental values,that is,the model solution method can correctly forecast the post-buckling load.The difference of the skin parameters changes the buckling mode of the stiffened panels,and has a significant impact on the post-buckling behavior,which significantly changes the load-bearing capacity of the stiffener structure.The research results are of great significance for optimizing the bearing capacity of composite stiffened panels and improving the efficiency of aircraft structure design.
作者
许良
边钰博
宋万万
周松
邢本东
XU Liang;BIAN Yubo;SONG Wanwan;ZHOU Song;XING Bendong(School of Mechatronics Engineering,Shenyang Aerospace University,Shenyang 110136,China;Shenyang Aircraft Industry Co.,Ltd.,Shenyang 110034,China;Shenyang Aircraft Design and Research Institute,Shenyang 110035,China)
出处
《复合材料科学与工程》
CAS
北大核心
2023年第4期100-106,共7页
Composites Science and Engineering
基金
沈阳航空航天大学青年博士科研启动基金(18YB05)
沈阳航空航天大学航空制造工艺数字化国防重点学科实验室开放基金(SHSYS 202104)。
关键词
复合材料加筋壁板
有限元
准静态分析
屈曲
后屈曲
composite stiffened panel
finite element
quasi-static analysis
buckling
post-buckling
