Elastic analysis of hybrid bonded joints and bonded composite repairs
Elastic analysis of hybrid bonded joints and bonded composite repairs
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混合粘合接头和粘合复合材料修复的弹性分析
DOI：
10.1016/j.compstruct.2007.02.007
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发表时间：
2008
影响因子：
6.3
通讯作者：
R. J. Clark
中科院分区：
文献类型：
--
作者：
D. Romilly;R. J. Clark
作者扩展了Delale等人[Delale F，Erdogan F，Aydinoglu MN.胶接接头中的应力：封闭解。J Compos Mater 1981;15：249-71]和Bigwood和Crocrombie [Bigwood DA，Crocombe AD.胶接接头的弹性分析与工程设计公式。Int J Adhes Adhes 1989;9（4）：229-42]，以包括在混合金属-复合材料接头中出现的复合材料变形机制和热残余应变，例如应用于金属飞机结构的粘合复合材料修理所呈现的那些。的粘合剂的应力和遵守的分析预测进行比较的线性弹性有限元模型，本身已通过与实验结果的比较验证的结果。将结果应用于裂纹铝基板粘接复合材料修复的耦合线性延伸和弯曲问题。所得的应力强度因子和裂纹张开位移的修复板进行比较的三维有限元分析的结果，也表现出优异的结果。在整个文本中，观察结果的实际应用，以失败的预测混合接头，作者证明了需要一致性的分析方法，用于确定疲劳和失败的复合材料从试样水平的最终结构细节的分析。
The authors extend the closed-form bonded joint linear elastic analysis method of Delale et al. [Delale F, Erdogan F, Aydinoglu MN. Stresses in adhesively bonded joints: a closed-form solution. J Compos Mater 1981;15:249–71] and Bigwood and Crocrombie [Bigwood DA, Crocombe AD. Elastic analysis and engineering design formulae for bonded joints. Int J Adhes Adhes 1989;9(4):229–42] to include the composite deformation mechanisms and the thermal residual strains that arise in hybrid metal-composite joints such as those presented by bonded composite repairs applied to metallic aircraft structures. The analytical predictions for the adhesive stresses and the compliance are compared to the results of a linear elastic finite element model that has itself been validated by comparison with experimental results. The results are applied to the problem of coupled linear extension and bending of a bonded composite repair applied to a cracked aluminum substrate. The resulting stress intensity factor and crack-opening displacement in the repaired plate are compared to the results of a three-dimensional finite element analysis, and also exhibit excellent results. Throughout the text, observations are made regarding the practical application of the results to failure prediction in hybrid joints, whereby the authors demonstrate the need for consistency in the analytical methods used to determine the fatigue and failure of composites from the coupon level to the analysis of the final structural details.