桁架结构中复合材料胶接区域胶层失效原因研究

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中图分类号：TQ342+.742 文献标志码：A文章编号：1001-5922（2025）07-0021-04

Abstract：By establishing afinite element modelofthe gluedconnection betweenthe metal jointandthecarbon fiber rod，and the temperature field simulation analysis of the glued area，the failure principle and connection mode of the glue layer ofthe trusstructure were discussed.The results showed that the adhesive layer in the adhesive area failed under highand low temperature conditions，andonlythe adhesive layerintheendarea of the joint bonding areafailedunder high temperature conditions.Atlow temperatures，the adhesive line failed inthe end area as well as in the edge area of the square joint.From the analysis of the secondary nominal stress and each stress component，the failure ofthe adhesivelayer under low temperature conditions wasmore serious than that under high temperature conditions.The simulation results were verified by the preparation test，and part of the load of the adhesive line could be shared by increasing the riveted connection mode，soas to avoid the failure of theadhesive line and make the truss structure more stable.

Key words：carbon fiber composite material;temperature field ;adhesive layer failure; stress component

桁架结构是将碳纤维复合材料与金属材料通过某种连接方式而成的立体结构，其结构设计灵活，可以通过大跨度连接设计来实现结构载荷的三维均匀分布，从而增加卫星结构的承载能力[1]。（剩余3888字）