Abstract Cohesive zone modelling is increasingly applied to predict the strength of structural adhesive joints. A method is here proposed to determine the bondline shear traction-separation law needed for cohesive zone models. The method combines an effective crack length approach derived from a beam model and an existing J-integral analysis of the end-notched flexure specimen. The resulting work done by the tractions versus separation curves can be easily processed with direct or mixed direct-inverse approaches. Application to some published experimental results demonstrates the potential of the method while highlighting the importance of adherend material and specimen geometry selection.

中文翻译：

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使用端部缺口弯曲试样测定粘合剂层的剪切牵引-分离规律

摘要 内聚区建模越来越多地应用于预测结构胶接接头的强度。这里提出了一种方法来确定粘性区模型所需的胶层剪切牵引-分离定律。该方法结合了从梁模型导出的有效裂纹长度方法和端部缺口弯曲试样的现有 J 积分分析。牵引与分离曲线所做的最终功可以通过直接或混合的正反方法轻松处理。应用于一些已发表的实验结果证明了该方法的潜力，同时强调了粘附材料和试样几何形状选择的重要性。