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Modeling of a cracked metallic structure with bonded composite patch using the three layer technique

机译:使用三层技术对带有粘结复合材料贴片的破裂金属结构进行建模

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摘要

Due to the high computational cost of three-dimensional finite element analysis, the two-dimensional finite element analysis involving the three layer technique is introduced to investigate the repair of cracked metallic structures using an adhesively bonded composite patch. In the three layer technique, two-dimensional Mindlin plate elements with transverse shear deformation capability are used for all three layers; cracked plate, adhesive and composite patch. The accuracy of the three layer technique to compute the stress intensity factor for the metallic crack is demonstrated by a comparison with available two- and three-dimensional models. The strain energy release rates of the debond at the adhesive interfaces are also examined and compared with the previous studies. The three layer technique provides an efficient and accurate alternative model which is capable of investigating in depth the adhesive effects on the bonded patch repair of cracked metallic structures.
机译:由于三维有限元分析的计算成本较高,因此引入了涉及三层技术的二维有限元分析,以研究使用粘接复合复合材料修补破裂的金属结构。在三层技术中,对所有三层都使用具有横向剪切变形能力的二维Mindlin板单元。破裂的板,粘合剂和复合补丁。通过与可用的二维和三维模型进行比较,证明了三层技术计算金属裂纹应力强度因子的准确性。还检查了粘合剂界面处脱胶的应变能释放速率,并将其与先前的研究进行了比较。三层技术提供了一种有效且准确的替代模型,该模型能够深入研究粘合对破裂的金属结构的修补修复的影响。

著录项

  • 来源
    《Composite Structures》 |1996年第3期|p.295-308|共14页
  • 作者

    S. Naboulsi; S. Mall;

  • 作者单位

    Deparment of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7765, USA;

  • 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 工程材料学;
  • 关键词

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