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首页> 外文期刊>ISRN Mechanical Engineering >The Investigation of Crack's Parameters on the V-Notch Using Photoelasticity Method
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The Investigation of Crack's Parameters on the V-Notch Using Photoelasticity Method

机译：用光弹性方法研究V形缺口的裂纹参数

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V-notches are the most possible case for initiation of cracks in engineering structure. Cracks on the notch tip can be characterized by opening angle, tip radius, and depth of the V-notch. In this study, the effects of V-notch's opening angle on stress intensity factor and on ??-stress of the crack have been investigated in detail. Our calculation has been performed in a number of opening angles and various crack lengths in mode I loading using photoelasticity method. We show that as opening angle grows at constant crack's length, SIF and ??-stress decrease. Furthermore, as the crack's length increases, the V-notch effect diminishes and the crack behavior can be considered as a single-edge crack specimen. Finally, the obtained results were found to be in good agreement with outcome of numerical finite element analysis.
机译：V型缺口是引发工程结构裂缝的最可能的情况。缺口尖端上的裂纹可以通过开口角度，尖端半径和V形缺口的深度来表征。在这项研究中，已详细研究了V形缺口的张开角度对应力强度因子和裂纹δ应力的影响。我们使用光弹性方法在模式I加载中以许多开角和各种裂纹长度进行了计算。我们表明，随着开裂角在恒定裂纹长度处增大，SIF和Δε应力减小。此外，随着裂纹长度的增加，V形缺口效应减小，并且裂纹行为可被视为单边缘裂纹试样。最后，发现所获得的结果与数值有限元分析的结果非常吻合。

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