沈阳航空航天大学学报2026，Vol.43Issue(1)：18-25,8.DOI:10.3969/j.issn.2095-1248.2026.01.003
湿热环境下某型电动飞机复合材料蒙皮失稳破坏行为
Instability failure behavior of composite material skins of a certain type of electric aircraft under hygrothermal environment
摘要
Abstract
To verify whether the mechanical properties of the composite skin of a certain type of electric aircraft meet the design requirements under hot and humid environments,an environmental chamber was used to simulate the actual operating conditions,and the conditioning of test specimens under elevated-temperature and wet conditions was completed.for composite foam sandwich structure wing skin instability test specimens from a certain type of aircraft,the environmental chamber simulation technology was adopted.The elevated temperature wet(ETW)conditioning was completed during the preliminary assessment of test conditions.Comparative analysis of failure modes and structural strength was conducted under both room temperature dry(RTD)and ETW environments.The strain variation with compressive load was monitored,and the influence of the hygrothermal environment on the mechanical properties of composite materials was analyzed.The results indicate that the recommended maximum service temperature for the structure of this test specimen is 71℃,with a minimum temperature of-54℃and a relative humidity of 85%RH.Post-test analysis reveals that although both the strength and stiffness of the structure are significantly reduced under ETW environments,they still meet the airworthiness verification requirements.Due to the influence of the ETW environment,the collaborative working ability between the fibers and the matrix is weakened,and they can't efficiently cooperate to jointly bear the load and resist deformation.Therefore,the failure modes of the test specimen under the ETW environment exhibit greater complexity and diversity compared to those observed under the RTD environment.The results provide data support for optimizing the environmental conditioning scheme,establishing environmental design criteria,and completing the airworthiness verification plan,while offering critical technical references for designing composite structure in aircraft operating under complex environmental conditions.关键词
复合材料/泡沫夹层结构/压缩失稳/结构强度/环境箱模拟法/破坏模式Key words
composite material/foam sandwich structure/compressive instability/structural strength/environmental chamber simulation technology/failure modes分类
航空航天引用本文复制引用
刘秀芝,杨康..湿热环境下某型电动飞机复合材料蒙皮失稳破坏行为[J].沈阳航空航天大学学报,2026,43(1):18-25,8.基金项目
中国民用航空局安全能力建设项目(项目编号:AADSA2023017). （项目编号:AADSA2023017）
