1. 中国飞机强度研究所全尺寸飞机结构静力/疲劳航空科技重点实验室
2. 西北工业大学航空学院
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陈向明, 柴亚南, 袁菲, 等. 胶-螺混合连接结构的传力分析[J]. 机械强度, 2017,39(3):668-673.
CHEN XiangMing, CHAI YaNan, YUAN Fei, et al. LOAD TRANSFER ANALYSIS IN BONDED-BOLTED HYBRID JOINTS[J]. 2017,39(3):668-673.
陈向明, 柴亚南, 袁菲, 等. 胶-螺混合连接结构的传力分析[J]. 机械强度, 2017,39(3):668-673. DOI: 10.16579/j.issn.1001.9669.2017.03.029.
CHEN XiangMing, CHAI YaNan, YUAN Fei, et al. LOAD TRANSFER ANALYSIS IN BONDED-BOLTED HYBRID JOINTS[J]. 2017,39(3):668-673. DOI: 10.16579/j.issn.1001.9669.2017.03.029.
建立了胶-螺混合连接结构的有限元模型,并进行了传力分析研究。利用粘聚区模型模拟胶层的失效过程,并考虑了金属结构的塑性变形。同时,通过胶接、机械连接及胶-螺混合连接三种形式分别进行了方法的验证,试验结果和模拟结果吻合较好,证明了所采用的胶-螺混合连接分析方法的有效性。另外,分别建立了单钉和双钉胶-螺混合连接结构模型,分析发现相对于胶接结构,单钉混合连接结构的承载能力并不会有明显提高。同时发现两钉胶-螺混合连接中两螺栓外侧的胶层由于较大的面外力会很快发生破坏,而两螺栓内侧的胶层由于螺栓的法向作用使得其只受纯剪切力,从而提高了该区域胶层的承载能力。鉴于此对混合连接构型进行了改进设计,很好地提高了连接强度。
A finite element method of the hybrid( bonded/bolted) joints is developed,and load transfer is analyzed. The three-dimensional cohesive zone model is used to simulate adhesive layer. Elasto-plastic deformation of metal structure is taken into account. Meanwhile,experimental data of the bonded joints,the bolted joints and the bonded/bolted hybrid joints are obtained and compared with the predictions. A good agreement between experimental results and numerical predictions is observed. In addition,single bolt and double bolts hybrid( bonded/bolted) joints models are developed,and analysis shows that load-bearing capacity of single bolt hybrid isn’t improved,relative to bonded joint. Meanwhile,in the double bolts hybrid joints,adhesive layer outside of the bolts is destroyed soon,because of biggish peeling force. That inside of bolts is carried pure shear force due to normal constraint force of bolts,and it could enhance carrying capacity of the adhesive layer. So the parameters and forms of bonded-bolted hybrid joints are improved,as enhanced the joints strength.
胶-螺混合连接内聚力模型数值模拟传力分析
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