摘要
对三分之一复合材料柱面壳进行压缩性能试验研究与理论分析,试验得到柱面壳的破坏方式为屈曲破坏。利用有限元法对其建模分析和静强度分析,得到的静强度远大于屈曲强度,因此柱壳应该首先发生屈曲破坏,这与试验结果相符;且理论计算所得的屈曲强度与试验结果相符,说明该模型可以用来分析整个复合材料柱壳的压缩破坏行为,研究结果可为柱壳的结构设计提供参考。对比某一载荷下理论模型与实际模型上对应点的应变,发现二者结果相符,证明有限元建模有效。然后分别对理论模型进行屈曲分析。
The compressive properties of one-third composite cylindrical shells were tested and theoretical analyzed.The test results show that the cylindrical shells failure in buckling.The finite element method was used to establish an analysis model of the shell.The model was used for the further static strength and buckling analysis.The results show that the static strength is much higher than the buckling strength.So the shell should fail in buckling at first.This is coordinate with the test result.And the buckling strength of this model also agrees with the test results well.This model can be used to analyze the compression behavior of the integrated composite cylindrical shell and the results would provide reference for cylindrical shell structure design.Comparing the strains of the model with that of the specimen at the corresponding points under a certain compressive load,it shows that the strains match each other and indicates the efficiency of the model.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2011年第1期206-210,共5页
Acta Materiae Compositae Sinica
关键词
复合材料
柱壳
压缩
屈曲分析
有限元法
composites
cylindrical shell
compression
buckling analysis
finite element method
