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Numerical prediction of delamination in CFRP drilling

机译：CFRP钻孔分层的数值预测

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摘要

Delamination is one of the undesired effects of machining using non appropriate cutting parameters or worn drill. Finite element modeling of drilling of Carbon Fiber Reinforced Polymer (CFRP) composites is an interesting tool for damage prediction. Recently, complete modeling of the process including the rotatory movement of the drill, penetration in the composite plate and element erosion has been developed in the scientific literature. Computational cost of these complex models is a great disadvantage when comparing them with simplified models that consider the drill acting like a punch that pierces the laminate. In this paper both complete and simplified models were developed and compared in terms of delamination prediction. The simplified model, presenting reduced computational cost, slightly overestimates the delamination factor when compared with the complex model. The influence on delamination of thrust force, clamping area at the bottom surface of the laminate and the stacking sequence is studied using the simplified model.
机译：分层是使用不合适的切削参数或磨损的钻头进行机械加工的不良影响之一。碳纤维增强聚合物（CFRP）复合材料钻探的有限元建模是一种有趣的损伤预测工具。最近，在科学文献中已经开发了包括钻头的旋转运动，在复合板上的穿透和元素侵蚀在内的完整过程建模。将这些复杂模型的计算成本与简化模型进行比较时，这是一个很大的缺点，简化模型将钻头的作用像刺穿层压板的冲头。在本文中，开发了完整和简化的模型，并在分层预测方面进行了比较。与复杂模型相比，简化的模型具有较低的计算成本，但会稍微高估分层因子。使用简化的模型研究了对推力分层，层压板底部表面的夹持面积以及堆叠顺序的影响。

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  • 来源
    《Composite Structures》 |2014年第2期|677-683|共7页
  • 作者

    N. Feito; J. Lopez-Puente; C. Santiuste; M.H. Miguelez;

  • 作者单位

    Department of Mechanical Engineering, Universidad Carlos Ⅲ de Madrid, Avda. Universidad 30, 28911 Leganes, Madrid, Spain;

    Department of Continuum Media and Structural Analysis, Universidad Carlos Ⅲ de Madrid, Avda. Universidad 30, 28911 Leganes, Madrid, Spain;

    Department of Continuum Media and Structural Analysis, Universidad Carlos Ⅲ de Madrid, Avda. Universidad 30, 28911 Leganes, Madrid, Spain;

    Department of Mechanical Engineering, Universidad Carlos Ⅲ de Madrid, Avda. Universidad 30, 28911 Leganes, Madrid, Spain;

  • 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

    CFRPs; Drilling; Delamination; Modeling;

    机译：CFRP;钻孔;分层;造型;

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