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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Modeling of adhesive layers with temperature-dependent cohesive zone elements for predicting adhesive failure during the drying process of cathodic dip painting
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Modeling of adhesive layers with temperature-dependent cohesive zone elements for predicting adhesive failure during the drying process of cathodic dip painting

机译：使用与温度相关的内聚区元素对粘合剂层进行建模，以预测在阴极浸涂干燥过程中的粘合剂失效

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摘要

The number of electric and hybrid vehicles on the roads has increased significantly in recent years. The high weight of these vehicles requires the use of lightweight construction technologies and materials. In this context, adhesively bonded multi-material structures are increasingly being used. However, the combination of different materials with the production processes established in the automotive industry is a challenge to the manufacturers. Especially the drying process after cataphoretic dip coating can lead to adhesive failure. In order to detect and solve these problems as early as possible, a forecast using the finite element simulation is necessary in the early stage of the project. The objective is to show that a temperature-dependent cohesive zone model can be used to predict damage during the drying process. Therefore, the parameters for such a model were identified on different temperature levels using tubular butt joints, tapered double cantilever beams, and tapered end notched flexure specimens. Finally, the material model was validated on heated lap shear specimens. It could be shown that it is generally possible to predict damage within the adhesive layer using a cohesive zone model. Furthermore, it was shown that the way the stiffnesses are determined has a decisive influence on the calculation accuracy under temperature influence.
机译：近年来，道路上的电动和混合动力汽车的数量已大大增加。这些车辆的高重量要求使用轻型建筑技术和材料。在这种情况下，越来越多地使用粘合的多材料结构。但是，将不同的材料与汽车行业建立的生产工艺相结合对制造商来说是一个挑战。尤其是电泳浸涂后的干燥过程会导致粘合失败。为了尽早发现并解决这些问题，在项目的早期阶段就必须使用有限元模拟进行预测。目的是表明可以使用温度相关的内聚区模型来预测干燥过程中的损坏。因此，使用管状对接接头，锥形双悬臂梁和锥形端部带缺口挠曲样品，可在不同温度水平下确定该模型的参数。最后，在加热的搭接剪切试样上验证了材料模型。可以证明，通常可以使用内聚区模型预测粘合剂层内的损坏。此外，表明在温度影响下确定刚度的方式对计算精度具有决定性的影响。

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