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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。
The finite element model of the glue-screw hybrid connection structure is established and the force analysis is carried out. The cohesion zone model is used to simulate the failure process of the rubber layer and the plastic deformation of the metal structure is taken into account. At the same time, the methods were verified by three methods: gluing, mechanical connection and glue-screw hybrid connection. The experimental results are in good agreement with the simulation results, which proves the effectiveness of the proposed method. In addition, a single-screw and double-screw rubber-screw hybrid connection model was established respectively. It was found that the load capacity of the single screw hybrid connection structure did not increase significantly compared with the cementing structure. At the same time, it is found that the glue layer on the outside of the two bolts in the two nails glue-screw hybrid connection will destroy quickly because of the large external force, and the glue layer on the inside of the two bolts is only subjected to the pure shear force due to the normal action of the bolts, Thus increasing the bearing capacity of the glue layer in this area. In view of this, the hybrid connection configuration has been improved to improve the connection strength.