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Effect of damage on the vibration modal of a novel three-dimensional and four-directional braided composite T-beam

机译：损伤对新型三维四向编织复合T梁振动模态的影响

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摘要

The effect of damage on the modal properties of a three-dimensional (3Dim) and four-directional (4Dir) braided composite T-beam was investigated by means of modal experiments and finite element analysis (FEA). The experimental tests on these damaged T-beams showed alteration of the vibration mode response. The damage obviously changed the mode shape curvatures. The influence of the damage upon the modal shape curvatures of the T-beam could be used to detect and localize the damage. Finite element modeling (FEM) of the damaged T-beam revealed that the damage affected the natural frequency of the T-beam but did not affect its modal shape. (C) 2015 Elsevier Ltd. All rights reserved.
机译：通过模态实验和有限元分析（FEA）研究了损伤对三维（3Dim）和四向（4Dir）编织复合T型梁的模态特性的影响。对这些损坏的T型梁的实验测试表明，振动模式响应发生了变化。损坏明显改变了振型弯曲。损伤对T形梁的模态形状曲率的影响可用于检测和定位损伤。受损T梁的有限元建模（FEM）显示，损坏影响了T梁的固有频率，但没有影响其模态形状。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composites》 |2016年第2期|108-119|共12页
  • 作者

    Pei Xiaoyuan; Chen Li; Li Jialu; Tang Youhong; Chen Kuifu;

  • 作者单位

    Tianjin Polytech Univ, Composites Res Inst, Tianjin 300160, Peoples R China|Tianjin Polytech Univ, Educ Minist, Key Lab Adv Text Composite Mat, Tianjin 300160, Peoples R China|Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China|Tianjin Polytech Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China|Flinders Univ S Australia, Sch Comp Sci Engn & Math, Ctr Maritime Engn Control & Imaging, Ctr Nanoscale Sci & Technol, Bedford Pk, SA 5042, Australia;

    Tianjin Polytech Univ, Composites Res Inst, Tianjin 300160, Peoples R China|Tianjin Polytech Univ, Educ Minist, Key Lab Adv Text Composite Mat, Tianjin 300160, Peoples R China;

    Tianjin Polytech Univ, Composites Res Inst, Tianjin 300160, Peoples R China|Tianjin Polytech Univ, Educ Minist, Key Lab Adv Text Composite Mat, Tianjin 300160, Peoples R China;

    Flinders Univ S Australia, Sch Comp Sci Engn & Math, Ctr Maritime Engn Control & Imaging, Ctr Nanoscale Sci & Technol, Bedford Pk, SA 5042, Australia;

    China Agr Univ, PB 74,East Campus, Beijing 100083, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Polymer-matrix composites (PMCs); Non-destructive testing; Finite element analysis (FEA); Braiding;

    机译：聚合物基复合材料（PMC）;无损检测;有限元分析（FEA）;编织;

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