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Cohesive/adhesive failure interaction in ductile adhesive joints Part I: A smeared-crack model for cohesive failure

机译:韧性粘合接头中的内聚/内聚破坏相互作用第一部分:内聚破坏的涂抹裂纹模型

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摘要

This paper proposes a new methodology for the finite element (FE) modelling of failure in adhesively bonded joint. Unlike current methods, cohesive and adhesive failures are treated separately. Initial results show the method's ability to give accurate prediction of failure of adhesive joints subjected to thickness-induced constraint and complex multi-axial loading using a single set of material parameters. The present paper (part I), focuses on the development of a smeared-crack model for cohesive failure. Model verification and validation are performed comparing the model predictions with experimental data from 3 point bending End Notched Flexure (3ENF) and Double Cantilever Beam (DCB) fracture tests conducted on adhesively bonded composite panels of different adhesive thicknesses. (C) 2016 The Authors. Published by Elsevier Ltd.
机译:本文提出了一种新的方法来进行胶接接头失效的有限元(FE)建模。与当前的方法不同,内聚性和粘合性故障将分别处理。初步结果表明,该方法能够使用一组材料参数准确预测受到厚度引起的约束和复杂的多轴载荷的粘合接头的失效。本论文(第一部分)重点研究了内聚破坏的涂抹裂纹模型的开发。进行模型验证和确认,将模型预测与来自在不同厚度的粘合剂粘合的复合板上进行的三点弯曲末端切口挠曲(3ENF)和双悬臂梁(DCB)断裂试验的实验数据进行比较。 (C)2016作者。由Elsevier Ltd.发布

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