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Experimental and numerical study of oblique impact on woven composite sandwich structure: Influence of the firing axis orientation

机译：斜向编织复合夹层结构冲击的实验和数值研究：烧成轴取向的影响

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摘要

During flight, aircrafts can be submitted to complex loadings. The reliability of their structure is an essential aspect in ensuring passenger safety. In the specific case of helicopters, blades are subjected to impact loading. The following work will focus on the experimental and numerical study of an oblique impact on the skin of the blade. It is equivalent in a first approach to an impact on a sandwich panel comprising a foam core and a thin woven composite skin. This study aims to identify the mechanisms of damage to the skin for different orientations of the firing axis, and to develop a representative model of the damage kinetics adapted to the modeling of the complete structure. Thus, an F.E. semi-continuous explicit model has been developed. It relies on the development of a specific damageable element at the woven mesh scale. Numerical results obtained are accurate, allowing the identification of the damage mechanism of the woven skin for different firing orientations.
机译：在飞行过程中，飞机可以承受复杂的载荷。其结构的可靠性是确保乘客安全的重要方面。在直升飞机的特定情况下，叶片承受冲击载荷。以下工作将集中在对刀片的皮肤产生倾斜影响的实验和数值研究上。在第一种方法中，这等效于对包括泡沫芯和薄编织复合表皮的夹心板的冲击。这项研究的目的是确定针对击发轴不同方向的皮肤损伤机理，并建立适合于完整结构建模的损伤动力学代表性模型。因此，已经开发了F.E.半连续显式模型。它依赖于机织网眼规模的特定易损元件的开发。所获得的数值结果是准确的，从而可以确定不同烧制方向的编织蒙皮的损坏机理。

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  • 来源
    《Composite Structures》 |2012年第6期|p.1967-1972|共6页
  • 作者

    P. Navarro; J. Aubry; S. Marguet; J.-F. Ferrero; S. Lemaire; P. Rauch;

  • 作者单位

    Universite de Toulouse/ICA/ISAE, 10 av. E. Belin, 31055 Toulouse Cedex, France;

    Universite de Toulouse/ICA/ISAE, 10 av. E. Belin, 31055 Toulouse Cedex, France;

    Universite de Toulouse/lCA/UPS, 118 Rte de Narbonne, 31062 Toulouse, France;

    Universite de Toulouse/lCA/UPS, 118 Rte de Narbonne, 31062 Toulouse, France;

    Eurocopter Marignane/BDD, Aeroport Marseille P., 13725 Marignane, France;

    Eurocopter Marignane/BDD, Aeroport Marseille P., 13725 Marignane, France;

  • 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

    impact behavior; damage mechanics; sandwich structures; finite element analysis;

    机译：冲击行为;破坏机理;夹层结构有限元分析;

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