航空复合材料干涉连接结构湿热服役力学性能研究  

Study on mechanical properties of aeronautical composite material interference-fit structures in hygrothermal service

作　　者：丘宏俊 钟梓鹏[1] 梁卫颖[1] 刘超 程秀全[1] QIU Hongjun;ZHONG Zipeng;LIANG Weiying;LIU Chao;CHENG Xiuquan(School of Aircraft Maintenance Engineering,Guangzhou Civil Aviation College,Guangzhou 510403,China)

机构地区：[1]广州民航职业技术学院飞机维修工程学院,广州510403

出　　处：《航空工程进展》2025年第1期177-186,共10页Advances in Aeronautical Science and Engineering

基　　金：国家自然科学基金(51575117,61179051);广东省高校特色创新项目(2022KTSCX224)。

摘　　要：当前,湿热环境对复合材料的影响更偏向于材料组成结构方面的研究,对复合材料连接的研究则相对匮乏。以复合材料干涉连接结构为对象,基于湿热环境下复合材料的力学本构关系与连续损伤模型,建立复合材料干涉连接结构的数值仿真模型;利用该模型分别对湿热循环0、30、60、90、120天干涉连接结构的静强度和损伤失效进行分析,并结合湿热老化试验对其进行验证。结果表明:随着湿热循环周期由0天逐步递增到120天,复合材料干涉连接结构的极限载荷分别降低了3.33%、5.63%、8.83%和10.81%;湿热环境会造成复合材料开孔处基体内部发生老化反应,致使基体性能迅速下降,而对纤维损伤影响较小。Currently,the study on the influence of hygrothermal environment on composite material is more inclined to the material composition structure,rather than the composite connection.A numerical simulation model of composite interference-fit structure is established based on the mechanical ontological relationship and continuous damage model of composites under the hygrothermal environment with the object of composite interferencefit structure.The model is utilized to analyze the static strength and damage failure of interference-fit structures in the hygrothermal cycle of 0 days,30 days,60 days,90 days and 120 days respectively,and is validated with the hygrothermal aging experiment.The results show that the ultimate load of the composite interference-fit structure decreases by 3.33%,5.63%,8.83%and 10.81%respectively,as the hygrothermal cycling period increases from 0 days to 120 days;the hygrothermal environment causes the aging reaction within the matrix of composite opening,results in a rapid deterioration of the matrix performance,while has little effect on the fiber damage.

关 键 词：复合材料 干涉连接结构 湿热老化 损伤 失效 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程] TB33[一般工业技术—材料科学与工程]