关于 GFRP 铝合金粘接接头几何形状对接头强度影响的实验和数值分析

IF 3.4 3区 工程技术 Q1 MECHANICS
Tuqiang Wang , Shuang Yang , Jun Wang , Xi Chen , Chaoqun Wu , Weirong Zhu
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引用次数: 0

摘要

提高复合材料与金属之间的粘接强度是亟待解决的难题之一。提高粘合接头强度的方法之一是改变接头的几何形状。本文通过设计不同角度和形状的凹槽,开发了四种不同类型的铝合金套筒。玻璃纤维增强聚合物棒被粘合到这些套筒上,从而制备出包括传统结构在内的五种不同类型的粘合接头。实验和数值分析了这些接头的机械性能和失效机理。结果表明,与传统的粘接接头相比,所设计的四种粘接接头的承载能力有了显著提高,最大提高了 49.6%,最小提高了 35.6%。接头内凹槽结构的轴向角度是影响接头极限承载能力的一个因素。此外,粘合剂层中的剪应力被认为是粘合剂层失效的主要原因。设计的机械联锁结构不仅能增加粘合剂层与基材之间的界面粘合力,还能延缓粘合剂层的完全失效,从而提高接头的承载强度。这项工作有望为复合材料和金属接头的设计提供新的启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental and numerical analysis of geometry on joint strength in GFRP-aluminum alloy adhesive joints
Enhancing the bonding strength between composites and metals is one of the urgent challenges that needs to be addressed. One of the methods to improve the strength of adhesive joints is to change the geometry of the joints. In this paper, four different types of aluminum alloy sleeves were developed by designing grooves with varying angles and shapes. Glass fiber reinforced polymer rods were adhesively bonded to these sleeves, resulting in the preparation of five different types of adhesive joints, including a conventional structure. The mechanical performance and failure mechanisms of these joints were analyzed experimentally and numerically. The results indicate that, compared to conventional adhesive joints, the load-bearing capacity of the four designed adhesive joints has been significantly improved, with a maximum increase of 49.6% and a minimum increase of 35.6%. The axial angle of the groove structures designed within the joint is a factor that influences the ultimate load capacity of the joint. Furthermore, the shear stress in the adhesive layer is identified as the primary cause of adhesive layer failure. The designed mechanical interlocking structures can not only increase the interfacial bonding force between the adhesive layer and the substrate but also delay the complete failure of the adhesive layer, thereby improving the load-bearing strength of the joint. This work is expected to provide new insights for the design of composite and metal joints.
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来源期刊
CiteScore
6.70
自引率
8.30%
发文量
405
审稿时长
70 days
期刊介绍: The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.
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