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An energy based failure criterion for matrix crack induced delamination in laminated composite structures

机译:层状复合结构中基体裂纹诱发分层的基于能量的破坏准则

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摘要

Available failure criteria for the design of laminated composite structures do not explicitly take into account the occurrence of delaminations induced by matrix cracks. However, depending on the material properties, laminate stacking sequence and ply thickness, this failure mode may appear and compromise the structural integrity of the structure. In this work, a failure criterion for predicting matrix cracking induced delamination in laminated composites is presented. The failure criterion is developed within the framework of Fracture Mechanics, by comparing the energy release rate available for delamination extension near a matrix crack and the fracture toughness of the interface. The predicted failure loads agree well with experimental data available in the literature, thus supporting the introduction of this failure criterion into the set of failure criteria usually considered in composite's structural design.
机译:用于设计层压复合结构的可用失效准则未明确考虑由基体裂纹引起的分层的发生。但是,取决于材料的特性,层压板的堆叠顺序和板层厚度,这种失效模式可能会出现并损害结构的结构完整性。在这项工作中,提出了一种用于预测层压复合材料中基体开裂引起的分层的失效准则。通过比较可用于基质裂纹附近的分层扩展的能量释放速率和界面的断裂韧性,在断裂力学的框架内制定了破坏准则。预测的破坏载荷与文献中提供的实验数据非常吻合,从而支持将该破坏准则引入通常在复合材料结构设计中考虑的破坏准则集中。

著录项

  • 来源
    《Composite Structures》 |2014年第6期|339-344|共6页
  • 作者单位

    AMADE, Polytechnic School, University of Girona, Campus Montilivi s, 17071 Cirona, Spain,IK4-IKERLAN, PJM Arizmendiarrieta, 2, Arrasate-Mondragon, 20500 Cipuzkoa, Spain;

    AMADE, Polytechnic School, University of Girona, Campus Montilivi s, 17071 Cirona, Spain;

    AMADE, Polytechnic School, University of Girona, Campus Montilivi s, 17071 Cirona, Spain;

    AMADE, Polytechnic School, University of Girona, Campus Montilivi s, 17071 Cirona, Spain;

    AIRBUS OPERATIONS SAS, 316, Route de Bayonne, 31060 Toulouse Cedex 03, France;

    AIRBUS Operations GmbH, Kreetslag 10, 21129 Hamburg, Germany;

  • 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

    Delamination; Fracture Mechanics; Failure criterion;

    机译:分层;断裂力学;失效标准;

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