桁架結(jié)構(gòu)中復(fù)合材料膠接區(qū)域膠層失效原因研究

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中圖分類號：TQ342+.742 文獻(xiàn)標(biāo)志碼：A文章編號：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

桁架結(jié)構(gòu)是將碳纖維復(fù)合材料與金屬材料通過某種連接方式而成的立體結(jié)構(gòu)，其結(jié)構(gòu)設(shè)計靈活，可以通過大跨度連接設(shè)計來實現(xiàn)結(jié)構(gòu)載荷的三維均勻分布，從而增加衛(wèi)星結(jié)構(gòu)的承載能力[1]。（剩余3888字）