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夹持边界条件下表面裂纹应力强度因子求解

曹淑森 贺小帆 杨博霄 刘文珽

曹淑森, 贺小帆, 杨博霄, 等 . 夹持边界条件下表面裂纹应力强度因子求解[J]. 北京航空航天大学学报, 2014, 40(11): 1637-1642. doi: 10.13700/j.bh.1001-5965.2013.0717
引用本文: 曹淑森, 贺小帆, 杨博霄, 等 . 夹持边界条件下表面裂纹应力强度因子求解[J]. 北京航空航天大学学报, 2014, 40(11): 1637-1642. doi: 10.13700/j.bh.1001-5965.2013.0717
Cao Shusen, He Xiaofan, Yang Boxiao, et al. Solution of stress intensity factor of surface cracked geometry with clamped ends[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(11): 1637-1642. doi: 10.13700/j.bh.1001-5965.2013.0717(in Chinese)
Citation: Cao Shusen, He Xiaofan, Yang Boxiao, et al. Solution of stress intensity factor of surface cracked geometry with clamped ends[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(11): 1637-1642. doi: 10.13700/j.bh.1001-5965.2013.0717(in Chinese)

夹持边界条件下表面裂纹应力强度因子求解

doi: 10.13700/j.bh.1001-5965.2013.0717
详细信息
    作者简介:

    曹淑森(1991-),男,山东沂水人,硕士生,sy1305102@ase.buaa.edu.cn

    通讯作者:

    贺小帆

  • 中图分类号: V215.5

Solution of stress intensity factor of surface cracked geometry with clamped ends

  • 摘要: 为了进行试验室条件下表面裂纹扩展行为研究,需要进行试验机夹持边界条件下的表面裂纹应力强度因子求解.通过对夹持特点的分析,将其等效为均匀拉伸和弯矩的共同作用,并使得试件端部转角为0°.以自由均匀拉伸和纯弯载荷作用下表面裂纹应力强度因子解的Newman-Raju公式为基础,计算得到了等效模型弹性位能表达式,应用卡氏第一定理求得了弯矩与拉伸载荷的关系,采用叠加原理得到了夹持边界条件下表面裂纹应力强度因子解.为了验证解的适用性,采用Abaqus软件计算得到夹持边界条件下若干典型表面裂纹的应力强度因子数值解,对比表明了提出的应力强度因子解法是足够精确的.随后探讨了裂纹形状、试件长厚比等对夹持边界条件下应力强度因子修正因子的影响规律.

     

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出版历程
  • 收稿日期:  2013-12-06
  • 刊出日期:  2014-11-20

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