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Bending/tensile tests and simulations of the 2.5D woven T-shaped hooking composite structure

机译：2.5D T形钩编织复合结构的弯曲/拉伸测试和模拟

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摘要

The bending strength and the tensile strength are the important mechanical properties of T-shaped hooking composite structures, which are one of the connection structures in aero-engine. In this paper, a kind of 2.5D woven T-shaped hooking composite structure, which consists of a groove structure and a T-shaped structure, was designed and used for bending test and tensile test, respectively. Experimental results showed that the initial damages both occur at the root-edge of web, and then the damages extend to the root-middle in bending test or extend perpendicular to the root-edge to the edge of the flange in tensile test. Then, a strength prediction method of progressive damage for 2.5D woven T-shaped hooking composite structure based on three-unit-cell model was proposed and used to describe the mechanical behaviors and damage processes of the connecting structure under bending/tensile loads, respectively. The comparisons between the simulation results and tests showed that the maximum error of the bending/tensile strengths is less than 15% and the damage modes between tests and simulations are similar. Therefore, the predicted strengths are accurate and the strength prediction method of progressive damage proposed in this paper is effective.
机译：弯曲强度和拉伸强度是T形钩状复合结构的重要机械性能，T形钩状复合结构是航空发动机的连接结构之一。本文设计了一种由沟槽结构和T形结构组成的2.5D编织T形钩复合结构，分别用于弯曲试验和拉伸试验。实验结果表明，初始损伤都发生在腹板的根部边缘，然后在弯曲试验中损伤扩展到根部中部，或者在拉伸试验中损伤垂直于根部边缘延伸到凸缘的边缘。然后，提出了一种基于三单元模型的2.5D T型钩形钩编复合结构渐进破坏强度预测方法，并分别描述了连接结构在弯曲/拉伸载荷下的力学行为和破坏过程。 。仿真结果与试验结果的比较表明，弯曲/拉伸强度的最大误差小于15％，试验和模拟之间的损伤模式相似。因此，预测强度是准确的，本文提出的渐进破坏强度预测方法是有效的。

著录项

  • 来源
    《Composite Structures》 |2018年第12期|155-163|共9页
  • 作者

    Zhang Hongjian; Guo Junhua; Wen Weidong; Cui Haitao; He Shu; Xu Ying;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol,Coll Energy & Power, Jiangsu Prov Key Lab Aerosp Power Syst,State Key, Nanjing 210016, Jiangsu, Peoples R China;

  • 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

    Bending test; Tensile test; 2.5D woven T-shaped hooking composite structure; Strength prediction method; Failure mode;

    机译：弯曲试验拉伸试验2.5D T型钩编织复合结构强度预测法破坏模式;

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