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基于准静态拉伸试验的临界CTOA测量

鲁龙坤 王生楠 王照 宋恩鹏

鲁龙坤, 王生楠, 王照, 等 . 基于准静态拉伸试验的临界CTOA测量[J]. 北京航空航天大学学报, 2016, 42(9): 1936-1943. doi: 10.13700/j.bh.1001-5965.2015.0557
引用本文: 鲁龙坤, 王生楠, 王照, 等 . 基于准静态拉伸试验的临界CTOA测量[J]. 北京航空航天大学学报, 2016, 42(9): 1936-1943. doi: 10.13700/j.bh.1001-5965.2015.0557
LU Longkun, WANG Shengnan, WANG Zhao, et al. Critical CTOA measurement based on quasi-static tensile test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(9): 1936-1943. doi: 10.13700/j.bh.1001-5965.2015.0557(in Chinese)
Citation: LU Longkun, WANG Shengnan, WANG Zhao, et al. Critical CTOA measurement based on quasi-static tensile test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(9): 1936-1943. doi: 10.13700/j.bh.1001-5965.2015.0557(in Chinese)

基于准静态拉伸试验的临界CTOA测量

doi: 10.13700/j.bh.1001-5965.2015.0557
详细信息
    作者简介:

    鲁龙坤,男,博士研究生。主要研究方向:断裂、疲劳与损伤容限。E-mail:1768614416@qq.com;王生楠,男,博士,教授,博士生导师。主要研究方向:结构疲劳、断裂、损伤容限、可靠性。Tel.:029-88460498,E-mail:wangshna@nwpu.edu.cn

    通讯作者:

    王生楠,Tel.:029-88460498,E-mail:wangshna@nwpu.edu.cn

  • 中图分类号: V215.6

Critical CTOA measurement based on quasi-static tensile test

  • 摘要: 为了寻求更为简单、准确的临界裂纹尖端张开角(CTOAc)测量方法以推广CTOA准则的应用,本文对材料CTOAc的测量方法进行了研究。根据CTOA的性质及Göteborgs Kungliga Segel Sällskap(GKSS)提出的CTOAc估算方法导出了两种不同裂纹尖端张开位移(CTOD)定义之间的关系,并进一步得到一种基于准静态拉伸试验的CTOAc测量方法,该方法与GKSS提出的估算方法相等效但更加简单。为了验证准静态拉伸试验法的准确性,对7B04 M(T)试样进行了静态拉伸试验,并使用上述两种方法估算7B04的CTOAc,结果表明两种方法估算出的CTOAc仅相差1%。同时分别采用平面应变核模型、平面应力模型对试样进行了弹塑性有限元模拟,模拟结果与试验结果相吻合。

     

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出版历程
  • 收稿日期:  2015-08-31
  • 网络出版日期:  2016-09-20

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