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采用基于考虑了各向异性和横向剪切刚度影响的厚壳理论的分析模型,研究各向异性、横向剪切刚度、长度和它们的相互作用对纯扭或者扭矩与轴压共同作用下圆筒屈曲性能的影响。由于该模型仅轴压下的屈曲性能得到验证,故将轴压下分析结果与扭转作用下作对比。结果表明,该模型对扭矩作用下屈曲性能亦有较好的适用性。研究表明,各向异性、横向剪切刚度及壳体长度均影响柱壳的临界力大小。这说明空心壳理论(Donnell理论)并不准确,应该采用考虑了各向异性和横向剪切刚度影响的厚壳理论。
The analytical model of thick shell based on the anisotropy and transverse shear stiffness is used to study the influence of anisotropy, transverse shear stiffness, length and their interaction on the torsional stiffness Effect of buckling performance. Since the buckling performance of the model under axial compression is verified, the result of axial compression analysis is compared with that of torsion. The results show that the model has good applicability to the buckling under torsion. The results show that anisotropy, transverse shear stiffness and shell length all affect the critical force of column shell. This shows that hollow shell theory (Donnell’s theory) is not accurate, thick shell theory that takes into account the effects of anisotropy and transverse shear stiffness should be adopted.