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用广义扩展有限元计算界面裂纹应力强度因子

苏毅 王生楠 鲁龙坤

苏毅, 王生楠, 鲁龙坤等 . 用广义扩展有限元计算界面裂纹应力强度因子[J]. 北京航空航天大学学报, 2016, 42(6): 1162-1168. doi: 10.13700/j.bh.1001-5965.2015.0376
引用本文: 苏毅, 王生楠, 鲁龙坤等 . 用广义扩展有限元计算界面裂纹应力强度因子[J]. 北京航空航天大学学报, 2016, 42(6): 1162-1168. doi: 10.13700/j.bh.1001-5965.2015.0376
SU Yi, WANG Shengnan, LU Longkunet al. SIFs of interfacial crack using generalized extended finite element method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1162-1168. doi: 10.13700/j.bh.1001-5965.2015.0376(in Chinese)
Citation: SU Yi, WANG Shengnan, LU Longkunet al. SIFs of interfacial crack using generalized extended finite element method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1162-1168. doi: 10.13700/j.bh.1001-5965.2015.0376(in Chinese)

用广义扩展有限元计算界面裂纹应力强度因子

doi: 10.13700/j.bh.1001-5965.2015.0376
基金项目: 航空科学基金(2010ZF56016)
详细信息
    作者简介:

    苏毅 女,博士研究生。主要研究方向:扩展有限元法、飞机结构疲劳断裂可靠性及损伤容限。E-mail:suxiaoyi12@126.com;王生楠 男,博士,教授,博士生导师。主要研究方向:飞机结构疲劳断裂可靠性及损伤容限、固体力学中新的计算策略和数值方法、计算机应用软件开发研制、飞机适航技术。E-mail:wangshna@nwpu.edu.cn

    通讯作者:

    王生楠,E-mail:wangshna@nwpu.edu.cn

  • 中图分类号: O346.1

SIFs of interfacial crack using generalized extended finite element method

  • 摘要: 广义扩展有限元法(GXFEM)是一种结合广义有限元法和扩展有限元法特点的新的数值模拟方法。给出了分析双材料界面裂纹应力强度因子(SIF)的广义扩展有限元法的基本原理。提出了一种新的双材料界面裂纹尖端富集函数,将裂纹尖端富集函数由12项缩减为6项。双材料界面不连续,在常规有限元法的位移模式中加入基于水平集的富集函数,同时将裂纹单元结点和裂纹尖端单元结点自由度广义化,提高了计算精度。通过与文献结果的比较,表明了提出方法的精确度和可靠度。

     

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出版历程
  • 收稿日期:  2015-06-09
  • 刊出日期:  2016-06-20

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