肋骨侧向稳定性特征屈曲有限元分析

环肋圆柱壳通常在周向布置肋骨来提高其稳定性,在深水压力作用下,肋骨发生侧向失稳的可能性加大,进而影响环肋圆柱壳的整体稳定性。在理论分析的基础上,采用有限元法对环肋圆柱壳进行在静水压力和轴向压力作用下的特征屈曲分析,研究肋骨侧向失稳的屈曲特征,得到肋骨侧向失稳的判别方法,为工程设计提供参考。

Eigenvalue buckling analysis of frame tripping

Ring stiffened cylindrical shell in general arranged ring frames along the circumferential direction is helpful for improving the stability. In the role of deep water pressure, frame tripping increase the possibility of the occurrence of instability, thereby affecting the overall stability of the ring stiffened cylindrical shell. In this paper, on the basis of theoretical analysis, the finite element method is used to analysis eigenvalue buckling of ring stiffened cylindrical shell under hydrostatic pressure and axial pressure .Through the research of the buckling characteristic , we can draw the rib lose lateral stability discrimination method, which provides the reference for the engineering design.