Cakiroglu Celal, Bekdaş Gebrail, Geem Zong Woo
Department of Civil Engineering, Turkish-German University, Sahinkaya Cad 86, Istanbul 34820, Turkey.
Department of Civil Engineering, Istanbul University, Cerrahpaşa, Istanbul 34310, Turkey.
Materials (Basel). 2020 Jun 26;13(12):2862. doi: 10.3390/ma13122862.
One of the major goals in the process of designing structural components is to achieve the highest possible buckling load of the structural component while keeping the cost and weight at a minimum. This paper illustrates the application of the harmony search algorithm to the buckling load maximisation of dispersed laminated composite plates with rectangular geometry. The ply thicknesses and fiber orientation angles of the plies were chosen as the design variables. Besides the commonly used carbon fiber reinforced composites, boron/epoxy and glass/epoxy composite plates were also optimised using the harmony search algorithm. Furthermore, the optimisation algorithm was applied to plates with three different aspect ratios (ratio of the longer side length to the shorter side length of the plate). The buckling loads of the plates with optimised dispersed stacking sequences were compared to the buckling loads of plates with the commonly applied 0°, ±45°, and 90° fiber angle sequence and identical ply thicknesses. For all three aspect ratios and materials in this study, the dispersed stacking sequences performed better than the plates with regular stacking sequences.
设计结构部件过程中的主要目标之一是在将成本和重量保持在最低水平的同时，使结构部件的屈曲载荷尽可能高。本文阐述了和声搜索算法在矩形几何形状的分散层合复合板屈曲载荷最大化中的应用。将各层的铺层厚度和纤维取向角作为设计变量。除了常用的碳纤维增强复合材料外，硼/环氧和玻璃/环氧复合板也使用和声搜索算法进行了优化。此外，该优化算法还应用于具有三种不同长宽比（板的较长边长与较短边长之比）的板。将具有优化分散堆叠顺序的板的屈曲载荷与具有常用的0°、±45°和90°纤维角度顺序且铺层厚度相同的板的屈曲载荷进行了比较。对于本研究中的所有三种长宽比和材料，分散堆叠顺序的性能优于具有规则堆叠顺序的板。
