Kałuża Marta, Hulimka Jacek, Bula Arkadiusz
Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5 St., 44-100 Gliwice, Poland.
Jacobs Engineering Group Inc., M. Konopnickiej 31 St., 30-302 Krakow, Poland.
Materials (Basel). 2022 Jan 3;15(1):330. doi: 10.3390/ma15010330.
The use of adhesive to joint structural elements, despite many advantages of this technology, is not a method commonly used in engineering practice, especially in construction. This is mainly due to the poor recognition of the behavior, both in terms of testing and analysis, of joints made on a scale similar to the actual elements of building structures. Therefore, this paper presents the results of model tests and then numerical analyses of adhesively bonded joints made of high-strength steel elements in a full-scale (double-lap joint). In order to properly model the adhesive connection, material tests of the methacrylate adhesive were performed in the field of tensile, shear (in two versions: single lap joint test and thick adherent shear test) and bond properties. Comparison of the results of the model and numerical tests showed very good agreement in terms of the measurable values, which makes it possible to consider the results obtained in the adhesive layer as reliable (not directly measurable in model tests). In particular, the distribution of stresses inside the adhesive layer, the range of plastic zones and areas of loss of adhesion are presented and discussed. The results indicate the possibility of a reliable representation of the behavior of adhesively bonded joints of high-strength steel, thus providing a tool for the analysis of semirigid adhesive in large-size joints.
尽管胶粘剂连接结构元件的技术有诸多优点，但它并非工程实践中常用的方法，尤其在建筑领域。这主要是因为对于与建筑结构实际元件尺寸相似的接头，在测试和分析方面，人们对其性能的认识不足。因此，本文展示了模型试验的结果，随后对全尺寸（双搭接接头）高强度钢元件制成的胶粘剂接头进行了数值分析。为了正确模拟胶粘剂连接，对甲基丙烯酸酯胶粘剂进行了拉伸、剪切（两种形式：单搭接接头试验和厚粘结剂剪切试验）以及粘结性能方面的材料试验。模型试验和数值试验结果的比较表明，在可测量值方面两者非常吻合，这使得可以认为在胶粘剂层中获得的结果是可靠的（在模型试验中无法直接测量）。特别地，展示并讨论了胶粘剂层内的应力分布、塑性区范围和粘结失效区域。结果表明有可能可靠地呈现高强度钢胶粘剂接头的性能，从而为分析大型接头中的半刚性胶粘剂提供了一种工具。
