COMPARATIVE STUDIES OF STRESS INTENSITY FACTORS FOR NOZZLE CORNER CRACKS AND FLAT PLATE CRACKS

机译：喷嘴角裂纹和平板裂纹的应力强度因子比较研究

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Using the finite element software Abaqus, the present study utilized explicit flaw modeling techniques to compute nozzle corner crack stress intensity factors for a range of semi-elliptical and sawcut cracks in a nozzle and semi-elliptical cracks in a flat plate. Additionally, a weight function method (WFM)for a semi-elliptical crack in aflat plate was evaluated. Stress intensity factors were computed for a number of loading conditions. A transient thermal stress analysis was performed for the nozzle explicit flaw models and discussed. Results of this study indicate that stress intensity factors at the bisecting position of the elliptical crack front from the flat plate model agree well with the analogous nozzle crack bisector position results and WFM solution.

机译：使用有限元软件Abaqus，本研究利用显式缺陷建模技术来计算喷嘴的一系列半椭圆形和锯齿形裂纹以及平板中的半椭圆形裂纹的喷嘴角裂纹应力强度因子。另外，评估了平板中半椭圆形裂纹的权重函数法（WFM）。计算了许多加载条件下的应力强度因子。对喷嘴的显式缺陷模型进行了瞬态热应力分析并进行了讨论。这项研究的结果表明，平板模型在椭圆形裂纹前沿的平分位置处的应力强度因子与类似的喷嘴裂纹平分线位置结果和WFM解非常吻合。

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《ASME Pressure Vessels and Piping conference》|2015年|V01AT01A017.1-V01AT01A017.29|共29页
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S. M. Smith; J. E. Holliday;
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4. COMPARATIVE STUDIES OF STRESS INTENSITY FACTORS FOR NOZZLE CORNER CRACKS AND FLAT PLATE CRACKS [C] . S. M. Smith, J. E. Holliday ASME Pressure Vessels and Piping Conference . 2015

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COMPARATIVE STUDIES OF STRESS INTENSITY FACTORS FOR NOZZLE CORNER CRACKS AND FLAT PLATE CRACKS

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