Compressive strength following delamination induced interaction of panel and sublaminate buckling
Compressive strength following delamination induced interaction of panel and sublaminate buckling
复制标题
分层引起面板和层压板屈曲相互作用后的抗压强度
DOI：
10.2514/6.2012-1461
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
G. Hunt
中科院分区：
文献类型：
--
作者：
A. Rhead;R. Butler;G. Hunt
许多面板已被人工分层，以产生一系列薄的各向异性子层压板。面板进行实验压缩测试，其中允许子层压板和整体面板屈曲模式相互作用。实验结果与以前的结果，其中面板屈曲约束的比较，表明屈曲模式的相互作用导致显着减少面板屈曲和分层传播应变。这表明，目前的工业实践中，使用单独的测试来定义允许应变的面板屈曲和损伤容限可能是不保守的。Shanley模型与计算效率高的分析条带模型相结合，保守地预测了压缩应变值，低于该值时不会发生分层传播。
A number of panels have been artificially delaminated to produce a range of thin anisotropic sub-laminates. Panels were subject to experimental compression testing in which sublaminate and global panel buckling modes were allowed to interact. A comparison of experimental results with previous results where panel buckling was restrained, demonstrates that interaction of buckling modes causes significant reductions in both panel buckling and delamination propagation strains. This indicates that the current industry practice of using separate tests to define allowable strains for panel buckling and damage tolerance may be unconservative. A combination of a Shanley model with a computationally efficient analytical Strip model, conservatively predicts values of compressive strain below which propagation of delaminations will not occur.