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Configuration of a genetic algorithm used to optimise fibre steering in composite laminates

机译:用于优化复合材料层压板纤维转向的遗传算法的配置

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摘要

In a previous study, a genetic algorithm (GA) was applied to define the optimum orientation of fibres in a unidirectional laminate in which the fibre orientations were allowed to vary continuously across the domain. The results were positive, but computation time was excessively long. The present study was undertaken to address this issue. The elements used by the GA (encoded representation, fitness criterion, operators affecting the population) were examined and optimised to reduce computation time. It was found that the use of a strain-based fitness criterion was better than use of a stress-based criterion, regardless of whether the load was above or below the elastic limit. A good balance of elitism and mixing was necessary in the GA parameters to obtain the fastest convergence. Automatic imaging of the GA output was achieved using the SAMCEF software package.
机译:在先前的研究中,采用遗传算法(GA)定义单向层压板中纤维的最佳取向,其中单纤维层的取向在整个域中连续变化。结果是肯定的,但是计算时间过长。进行本研究是为了解决这个问题。检查并优化了GA使用的元素(编码表示,适应度标准,影响总体的算子),以减少计算时间。结果发现,无论载荷是高于还是低于弹性极限,使用基于应变的适应性准则都比使用基于应力的准则更好。为了获得最快的收敛速度,必须在GA参数中达到平衡的平衡。使用SAMCEF软件包可以实现GA输出的自动成像。

著录项

  • 来源
    《Composite Structures》 |2012年第6期|p.2048-2056|共9页
  • 作者

    J. Bardy; X. Legrand; A. Crosky;

  • 作者单位

    Ecole Nationale Superieure des Arts et Industries Textiles (ENSAIT), Laboratoire de GEnie et Matiriaux TEXtiles (CEMTEX), 9 rue de l'Ermitage, BP 30329, 59100 Roubaix, France;

    Ecole Nationale Superieure des Arts et Industries Textiles (ENSAIT), Laboratoire de CEnie et Matiriaux TEXtiles (CEMTEX), 9 rue de l'Ermitage, BP 30329, 59100 Roubaix, France,University de Lille Nord de France, F59000 Lille, France;

    School oj Materials Science and Engineering, University of New South Wales, UNSW, Sydney, NSW 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    composite laminates; fibre steering; directed fibre placement; genetic algorithm;

    机译:复合层压板;光纤转向;定向纤维放置;遗传算法;

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