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首页> 外文期刊>JSME International Journal. Series A >Improvement of Design Reliability for Buckling Load Maximization of Composite Cylinder Using Genetic Algorithm with Recessive-Gene-Like Repair
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Improvement of Design Reliability for Buckling Load Maximization of Composite Cylinder Using Genetic Algorithm with Recessive-Gene-Like Repair

机译：基于隐性基因修复的遗传算法提高复合材料缸屈曲载荷的设计可靠性

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摘要

A genetic algorithm is applied to obtain the optimal stacking sequences for maximization of the buckling load of composite cylinders. In the problems, three constraint stacking rules are implemented. The first is that the angle plies of laminates have to be balanced. The second is that more than four contiguous plies of the same fiber orientation are not allowed. The third is that the difference in fiber orientation between adjacent plies must not be more than 45 degrees. The difficulty of handling the combinatorial constraints in genetic optimizations is overcome by adoption of a new repair system. When a chromosome violating the stacking constraints is decoded to a stacking sequence, the new repair system operates. The new repair system does not alter genes of the chromosome but changes only the deconding rules to introduce the constraints. This is similar to recessive genes in biology. By using this new repair system, a chromosome of {2 2 2 1 1 1 0 0 0} is decoded to [90/90/90/45/90/-45/-45/0/45] s. The design reliability of the genetic algorithm with the new repair system is examined in detail by comparing the reliability with a conventional penalty method. As a result, the genetic algorithm with the new repair system is shown ot provide higher design reliability.
机译：应用遗传算法获得最佳的堆叠顺序，以最大程度地提高复合材料圆柱的屈曲载荷。在这些问题中，实现了三个约束堆叠规则。首先是必须对层压板的角度层进行平衡。第二个是不允许有四个以上具有相同纤维方向的连续层。第三，相邻层之间的纤维取向差异不得超过45度。通过采用新的修复系统，克服了遗传优化中处理组合约束的困难。当违反堆叠约束的染色体被解码为堆叠序列时，新的修复系统将运行。新的修复系统不会更改染色体的基因，而只会更改确定规则以引入约束。这类似于生物学中的隐性基因。通过使用这个新的修复系统，{2 2 2 1 1 1 1 0 0 0}的染色体被解码为[90/90/90/45/90 / -45 / -45 / 0/45] s。通过将其与常规惩罚方法进行比较，详细研究了带有新修复系统的遗传算法的设计可靠性。结果，显示了具有新修复系统的遗传算法，可提供更高的设计可靠性。

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