Multi-nail and Double-shear Joint Technology for Mechanical Connection of Aviation Composite Materials
In this paper,the multi-nail and double-shear joint technology and its optimization strategy in aviation composite materials are discussed.The finite element model of multi-nail double-shear joint structure was established by using ABAQUS finite element analysis software,and the influence of the thickness of the lap plate and the diameter of the nail hole on the nail-load distribution and limit load was analyzed.The re-sults show that reducing the thickness of the lap plate can change the bearing ratio of each nail and in-crease the ultimate load of the joint structure.Compared with the stepped lap plate,the use of the inclined lap plate can further increase the ultimate load of the multi-pin double-shear joint structure.Changing the diameter of the nail hole can also optimize the load distribution of the nail hole and increase the limit load.When the thickness of the lap plate is the same,increasing the diameter of the nail hole by 1 mm can in-crease the maximum limit load by 4.81%.It can be concluded that it is helpful to optimize the nailing load distribution and increase the ultimate load to reduce the thickness of the lapping plate and increase the di-ameter of the nailing hole.
lap platemulti-nail double shear connectionultimate loadfinite element model
万方数据
维普
