复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (1): 5-12.DOI: 10.19936/j.cnki.2096-8000.20240128.001

• 基础研究 •    下一篇

挖补修理蜂窝夹芯结构侧压强度的可靠性及灵敏度分析

王轩1, 王威1, 余芬2, 邹润文1, 王魁奎3   

  1. 1.中国民航大学 航空工程学院,天津 300300;
    2.中国民航大学 交通科学与工程学院,天津 300300;
    3.航空工业济南特种结构研究所 高性能电磁窗航空科技重点实验室,济南 250023
  • 收稿日期:2022-10-27 出版日期:2024-01-28 发布日期:2024-02-27
  • 作者简介:王轩(1982—),男,博士,副教授,硕士生导师,主要从事复合材料结构适航与维修方面的研究,xuanwangaero2022@163.com。
  • 基金资助:
    国家973计划项目(20014CB046200);天津市科技计划项目(20YDTPJC00380);航空科学基金(2018ZF67011);中央高校基本科研业务费项目中国民航大学专项(3122019099)

Reliability and sensitivity analysis of the edgewise compressive strength of scarf repaired honeycomb sandwich structures

WANG Xuan1, WANG Wei1, YU Fen2, ZOU Runwen1, WANG Kuikui3   

  1. 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China;
    2. College of Traffic Science and Engineering, Civil Aviation University of China, Tianjin 300300, China;
    3. Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows, AVIC Research Institute for Special Structure of Aeronautical Composite, Jinan 250023, China
  • Received:2022-10-27 Online:2024-01-28 Published:2024-02-27

摘要: 以挖补修理复合材料蜂窝夹芯结构为研究对象,考虑胶层性能的不确定性,通过ABAQUS-MATLAB-Python联合仿真,建立挖补修理蜂窝夹芯结构侧向压缩渐进损伤分析模型,得到随机变量与其所对应的输出响应。基于蒙特卡罗法进行可靠性分析,采用基于方差和失效概率的全局灵敏度分析方法进行参数灵敏度分析。结果表明:外载荷在不同数值区间下结构失效概率具有较大差异,在接近极限破坏载荷时失效概率显著增加;胶层厚度方向的弹性模量和面内两个相互垂直方向上的剪切模量对挖补修理蜂窝夹芯结构侧压强度方差和失效概率的影响较大。

关键词: 复合材料, 蜂窝夹芯结构, 挖补修理, 全局灵敏度, 可靠性

Abstract: Taking the scarf repaired honeycomb sandwich structure of composite materials as the research object and considering the uncertainty of the adhesive layer material properties, the edgewise compression progressive damage analysis model of the scarf repaired honeycomb sandwich structure was established by ABAQUS-MATLAB-Python simulation, and the corresponding output response of random variables was obtained. Then, the reliability analysis was carried out based on Monte Carlo method, and the global sensitivity analysis method based on variance and failure probability was used to analyze the parameter sensitivity. The results show that the failure probability of the structure has great differences under different numerical intervals of external loads, and the failure probability increases significantly when approaching the ultimate failure load. The elastic modulus in the thickness direction of the adhesive layer and the shear modulus in the two mutually perpendicular directions in the plane have a great influence on the variance of the lateral compressive strength and failure probability of the honeycomb sandwich structure of the digging and repair.

Key words: composite, honeycomb sandwich structure, scarf repaired, global sensitivity, reliability

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