Analysis of failure mechanisms of adhesive joints modified by a novel additive manufacturing-assisted method
Analysis of failure mechanisms of adhesive joints modified by a novel additive manufacturing-assisted method
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新型增材制造辅助方法改性粘合接头的失效机制分析
DOI：
10.1016/j.engstruct.2022.115428
复制
发表时间：
2023
影响因子：
5.5
通讯作者：
Kanani A
中科院分区：
文献类型：
--
作者：
Kanani A
本文的研究采用了一种创新的方法来改变粘接接头的结构，以提高机械性能。采用增材制造技术制备了一种水溶性长丝（聚乙烯醇）的牺牲支撑结构。增材制造提供的设计自由度使得可以轻松地将夹具定制为任何几何形状，这可以用于在粘合剂粘合线的末端精确地制作所需的圆角形状。在试验试验的基础上，采用有限元方法研究了4种不同改性粘结接头沿粘结线的应力分布，并利用离散元法（DEM）在描述微裂纹的起裂和发展方面的强度，估计了接头在粘结线上的破坏载荷和裂纹路径。结果表明，无论胶粘剂类型如何，该方法都能在粘接线末端产生精确的圆角。改进后的接头力学性能显著提高。此外，从DEM模型中得到的破坏载荷和裂纹路径与试验和有限元（FE）结果非常吻合。在此基础上，总结了混合节点的破坏机理。
The research presented in this paper used an innovative method to modify the configuration of adhesively bonded joints for improved mechanical performance. Additive manufacturing was employed to produce sacrificial support structures with a water-soluble filament (Polyvinyl Alcohol). The design freedom offered by additive manufacturing makes it easy to tailor fixtures to any geometry, which can be used to accurately make the desired fillet shape at the end of the adhesive bond line. In addition to the experimental tests, the finite element method (FEM) was used to study the stress distribution along the bond line for four different modified bonded joints, whilst the discrete element method (DEM) was used to estimate the joint failure load and crack path in the adhesive bond line due to its strength in describing the initiation and progression of micro-cracks. The results show that the novel manufacturing method can produce an accurate fillet at the end of the bond line, regardless of the adhesive type. The mechanical performance of the joints with the modified features increased significantly. Furthermore, the failure load and crack path obtained from the DEM model is in close agreement with experimental and finite element (FE) results. Hence, the failure mechanism of the hybrid joints is then summarised.
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影响因子：
6.3
作者：
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通讯作者：
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具有可变粘合剂凹槽长度的碳/环氧树脂到钛单搭接接头的三维建模
DOI：
--
发表时间：
2012
期刊：
影响因子：
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DOI：
10.1016/j.ijadhadh.2022.103230
发表时间：
2022-07
影响因子：
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作者：
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影响因子：
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