Maximizing the buckling loads of symmetrically laminated composite rectangular plates using a layerwise optimization approach
Maximizing the buckling loads of symmetrically laminated composite rectangular plates using a layerwise optimization approach
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使用分层优化方法最大化对称层合复合矩形板的屈曲载荷
DOI：
10.1243/0954406041319554
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
G. Turvey
中科院分区：
文献类型：
--
作者：
Y. Narita;G. Turvey
摘要简要回顾了层合板的最佳铺层方式和屈曲载荷的研究。本文提出了一种新的顺序迭代法，即分层优化法（LO），用于确定对称层合矩形板的最佳铺层方式和最大屈曲载荷。解释了该过程的物理基础。LO被证明是非常有效的，减少计算工作量的99%以上是可能的比较，一些同时优化程序。三个例子的使用LO程序来确定最佳的铺层和相关的最大屈曲载荷的8层和24层对称层合矩形板进行均匀，单轴和双轴压缩。对于自由，简支和固支的边缘条件的18个组合，它表明，LO程序一般导致最佳的解决方案。在获得局部而不是整体解的极少数情况下，最大屈曲载荷仅比最佳值低4- 6.5%。
Abstract Research on optimum lay-ups and buckling loads of laminated plates is briefly reviewed. A new sequential, iterative procedure, known as layerwise optimization (LO), for determining the optimum lay-ups and maximum buckling loads of symmetrically laminated rectangular plates is described. The physical basis of the procedure is explained. LO is shown to be highly efficient, with reductions in computational effort of more than 99 per cent being possible in comparison to some simultaneous optimization procedures. Three examples are presented of the use of the LO procedure to determine the optimum lay-ups and associated maximum buckling loads of 8- and 24-layer symmetrically laminated rectangular plates subjected to uniform, uniaxial and biaxial compression. For 18 combinations of free, simply supported and clamped edge conditions, it is shown that the LO procedure generally leads to the optimum solution. In the very few instances where a local rather than a global solution was obtained, the maximum buckling load was only 4–6.5 per cent lower than the optimum value.