Buckling analysis and test of composite shells under hydrostatic pressure
Buckling analysis and test of composite shells under hydrostatic pressure
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DOI：
10.1016/j.jmatprotec.2007.11.228
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发表时间：
2008-05
影响因子：
6.3
通讯作者：
Jeong-Young Han;Hae-Young Jung;Jong-Rae Cho;Jinho Choi;W. Bae
中科院分区：
文献类型：
--
作者：
Jeong-Young Han;Hae-Young Jung;Jong-Rae Cho;Jinho Choi;W. Bae
本文的主要目的是研究的有效性的有限元法（FEM）的复合材料层合圆柱壳的屈曲和后屈曲行为已受到外部静水压力。此外，还提出了一个基于ASME和美国船级社（ABS）屈曲方程并针对USN 125复合材料定制的屈曲压力方程。为了确定复合材料在外部静水压力下的应用，对碳-环氧复合材料URN 300和USN 125进行了材料试验。测定了两种复合材料中纤维和树脂的强度和刚度。通过圆柱形板试验研究了垂直线荷载作用下的后屈曲行为。有限元分析，使用ABAQUS 6.6代码，已进行，使用线性屈曲模型的基础上的解决方案的特征值问题，和非线性模型的基础上的弧长法的各种情况下。此外，进行了外部静水压力试验，以验证数值分析。并将所得结果与有限元法所得的屈曲结果进行了比较。预计FEM和测试结果之间的差异约为18%。
The main objective of this paper is to investigate the validity of the finite element method (FEM) on the buckling and post-buckling behavior of laminated composite cylindrical shells that have been subjected to an external hydrostatic pressure. In addition, a buckling pressure equation that is based on the ASME and American Bureau of Shipping (ABS) bucking equation and customized to USN125 composite material is also presented. In order to determine an application for composite material under external hydrostatic pressure, material tests were conducted for carbon–epoxy ply composite URN300 and USN125. The strength and stiffness of the fiber and resin of two composites were determined. Cylindrical panel tests were performed to investigate the behavior of post-buckling under vertical line load. Finite element analyses, using ABAQUS 6.6 code, have been performed, using a linear buckling model based on the solution of the eigenvalue problem, and a non-linear model based on the arc-length method for various cases. Furthermore, an external hydrostatic pressure test was conducted to verify numerical analysis. These results were compared with the previous results obtained by FEM on the buckling. Difference between FEM and the test result is expected to be approximately 18%.