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Study the Relationship between CP Specimen Width and the Stress Intensity Factor Value around Nugget

机译：研究CP样本宽度与掘金围绕压力强度因子值的关系

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SIF value around weld nugget changes when specimen width is different. To investigate the influence of specimen width on SIF value around weld nugget of coach peel specimen (CP), a finite element model was established in this paper. In this model, a contour integral crack was used, and the area around the nugget was treated as crack tip. Results indicated that when specimen width was below 50mm, SIF decreased rapidly with the increase of specimen width. When specimen width was larger than 50mm, SIF almost remained constant with the variation of specimen width. To further study the influences of nugget diameter and sheet thickness on the Width-SIF curves, CP specimens with different nugget diameters (5mm, 6mm and 7mm) and sheet thicknesses (1.2mm, 1.6mm and 2.0mm) were established in ABAQUS. Simulation results of all CP specimens showed a similar relationship between specimen width and SIF. The SIF decreased when specimen width increased, and reached a constant value when specimen width was over 50mm.
机译：当样品宽度不同时，焊缝块周围的SIF值会发生变化。为了研究样品宽度对Coach Peel样本（CP）焊缝块周围的SIF值的影响，本文建立了有限元模型。在该模型中，使用轮廓整体裂纹，并且块周围的区域被视为裂纹尖端。结果表明，当样品宽度低于50mm时，SIF随着试样宽度的增加而迅速下降。当样品宽度大于50mm时，SIF几乎保持恒定，样品宽度的变化。为了进一步研究钢丝直径和板厚在宽度-SIF曲线上的影响，在阿巴斯建立了具有不同块直径（5mm，6mm和7mm）和板厚度（1.2mm，1.6mm和2.0mm）的CP样品。所有CP样本的仿真结果显示样品宽度和SIF之间的相似关系。当样品宽度增加时，SIF减小，当样品宽度超过50mm时达到恒定值。

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