Experimental and numerical investigation of adhesively bonded single lap and thick adherents joints between pultruded GFRP composite profiles
Experimental and numerical investigation of adhesively bonded single lap and thick adherents joints between pultruded GFRP composite profiles
复制标题
DOI：
10.1016/j.compositesb.2018.03.041
复制
发表时间：
2018-08
期刊：
影响因子：
--
通讯作者：
D. Ungureanu;N. Taranu;V. Lupășteanu;D. Isopescu;G. Oprișan;P. Mihai
中科院分区：
文献类型：
--
作者：
D. Ungureanu;N. Taranu;V. Lupășteanu;D. Isopescu;G. Oprișan;P. Mihai
本文介绍了玻璃纤维增强聚合物（GFRP）复合材料平板型材之间环氧树脂单搭接接头（slj）和厚粘接接头（taj）的实验和数值研究结果。实验方案采用不同连接类型（SLJ、TAJ）、键长（70、100、150 mm）、胶粘剂类型和胶粘剂厚度（1、2、3 mm）制备了30个试件；然后，它们在轴向拉伸中加载直至失效。基于试验结果，主要研究了不同加载阶段的具体破坏模式、载荷-位移行为、应力-应变变化、粘结-滑移关系以及应变沿粘结长度的分布。基于三维有限元分析的数值模拟结果与实验结果吻合较好。
This paper presents the outcomes of an experimental and numerical study performed on epoxy bonded single lap joints (SLJs) and thick adherents' joints (TAJs) between glass fiber reinforced polymer (GFRP) composite flat profiles. For the experimental program, 30 specimens were prepared by varying the type of connection (SLJ, TAJ), the bond length (70, 100, 150 mm), the type of adhesives and their thicknesses (1, 2, 3 mm); they were then loaded in axial tension up to failure. The main issues that were investigated based on the experimental results are the specific failure modes, load-displacement behavior, stress-strain variation, bond-slip relations and the strain distribution along the bond length at different loading stages. The numerical simulations, based on 3D FEM analysis, provided results in good agreement with the experimental ones for both stress-strain behavior and strain distributions along the bond length.