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一种考虑过滤的短纤维增强复合材料RVE建模方法

刘丰睿 骈瑢 赵丽滨 张建宇

刘丰睿, 骈瑢, 赵丽滨, 等 . 一种考虑过滤的短纤维增强复合材料RVE建模方法[J]. 北京航空航天大学学报, 2019, 45(2): 277-282. doi: 10.13700/j.bh.1001-5965.2018.0295
引用本文: 刘丰睿, 骈瑢, 赵丽滨, 等 . 一种考虑过滤的短纤维增强复合材料RVE建模方法[J]. 北京航空航天大学学报, 2019, 45(2): 277-282. doi: 10.13700/j.bh.1001-5965.2018.0295
LIU Fengrui, PIAN Rong, ZHAO Libin, et al. A filter based modeling method of RVE for short fiber reinforced composite[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(2): 277-282. doi: 10.13700/j.bh.1001-5965.2018.0295(in Chinese)
Citation: LIU Fengrui, PIAN Rong, ZHAO Libin, et al. A filter based modeling method of RVE for short fiber reinforced composite[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(2): 277-282. doi: 10.13700/j.bh.1001-5965.2018.0295(in Chinese)

一种考虑过滤的短纤维增强复合材料RVE建模方法

doi: 10.13700/j.bh.1001-5965.2018.0295
基金项目: 

国家自然科学基金 11772028

国家自然科学基金 11702012

国家自然科学基金 11572058

国家自然科学基金 11372020

详细信息
    作者简介:

    刘丰睿  男,博士,讲师,硕士生导师。主要研究方向:复合材料结构失效分析、多学科优化设计

    骈瑢  女,硕士研究生。主要研究方向:复合材料结构力学

    赵丽滨  女,博士,教授,博士生导师。主要研究方向:飞行器结构分析与优化设计、复合材料结构的破坏理论和力学设计、多场条件下多功能结构设计

    张建宇  男,博士,研究员,博士生导师。主要研究方向:金属多轴疲劳、复合材料疲劳断裂、疲劳可靠性工程

    通讯作者:

    刘丰睿, E-mail: frliu@buaa.edu.cn

  • 中图分类号: TB332

A filter based modeling method of RVE for short fiber reinforced composite

Funds: 

National Natural Science Foundation of China 11772028

National Natural Science Foundation of China 11702012

National Natural Science Foundation of China 11572058

National Natural Science Foundation of China 11372020

More Information
  • 摘要:

    代表性体积单元(RVE)法是短纤维增强复合材料性能预测的常用方法,其RVE生成效率是预测效率的重要影响因素。针对现有的随机顺序吸附(RSA)方法生成RVE时,布尔运算次数多、效率低的问题,通过在布尔运算前加入对纤维形心距的判断,过滤掉一部分随机生成的且与已有纤维相交的纤维,以减少布尔运算次数,提出了一种考虑过滤的随机顺序吸附(FRSA)方法。通过将改进后的FRSA方法在不同RVE参数和方法参数下生成RVE所需布尔运算次数和所需时间与基于布尔运算的随机顺序吸附(BORSA)方法进行比较,证明了FRSA方法的先进性。

     

  • 图 1  fi内切球体与fj内切球体相外切

    Figure 1.  Circumscribed inner spheres of fi and fj

    图 2  fi外切球体与fj外切球体相外切

    Figure 2.  Circumscribed outer spheres of fi and fj

    图 3  改进前后2种方法在一个RVE算例中每根纤维的布尔运算次数

    Figure 3.  Number of Boolean operation times per fiber in one RVE example with two methods before and after improvement

    图 4  FRSA方法生成的RVE

    Figure 4.  RVE generated with FRSA method

    表  1  不同VCmax情况下的RVE建模效率对比

    Table  1.   Comparison of RVE modeling efficiency for various VCmax

    VCmax/% T′/T t′/t
    5 0.76 0.86
    8 0.71 0.85
    11 0.82 0.86
    下载: 导出CSV

    表  2  不同dc情况下的RVE建模时间比

    Table  2.   Ratios of RVE modeling time for various dc

    VCmax/% t′/t
    dc=D dc=D
    5 0.84 0.86
    8 0.81 0.82
    11 0.66 0.72
    14 0.56 0.74
    17 0.48 0.52
    20 0.63
    23 0.37
    下载: 导出CSV

    表  3  不同AR情况下的RVE建模时间比

    Table  3.   Ratios of RVE modeling time for various AR

    AR t′/t
    dc=D dc=D dc=D
    4 0.74 0.87 0.85
    6 0.82 0.92 0.94
    8 0.88 0.93 0.94
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-05-22
  • 录用日期:  2018-07-28
  • 网络出版日期:  2019-02-20

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