摘要
为验证某型号新能源电动飞机机翼带孔蒙皮拉伸载荷承载能力是否满足CCAR-23-R3适航符合性要求,制备了6组上、下面板的、铺层均为[±45/(0,90)]s的带孔复合材料泡沫夹芯板(W-3021 FF/H60)试验件,通过试验测得室温与湿热环境下试验件的极限破坏载荷和破坏载荷时的变形位移,对所测数据进行对比分析,探讨湿热环境对带孔复合材料泡沫夹芯板的强度影响。结果表明:两种环境下的位移载荷曲线均为线性变化,未发生塑性变形;湿热环境下的极限破坏载荷与常温下基本保持一致,但湿热环境下的破坏位移较常温下变大;在湿热环境下试样的环境影响系数为1.007,衰减系数为0.99。因此,该带孔复合材料板在不同环境下仍具备良好的拉伸力学性能。
In order to verify whether the tensile load-bearing capacity of the wing belt hole skin of a certain new energy electric aircraft meets the requirements of CCAR-23-R3 airworthiness compliance,6 groups of upper and lower panels with [±45/(0,90)]s(W-3021 FF/H60) test parts were prepared.The ultimate failure load and deformation displacement at failure load of the test piece under room temperature and hygrothermal environment were measured by experiments,and the measured data were compared and analyzed to explore the influence of hygrothermal environment on the strength of composite foam sandwich panels with holes.The results show that the displacement load curve in both environments is linear without plastic deformation,the limit damage load is basically consistent with normal temperature.However,the damage displacement in a humid environment is larger than in normal temperature,the environmental impact coefficient in the humid environment of the test sample is 1.007and the attenuation coefficient is 0.99.Therefore,the porous composite plate still has good tensile mechanical properties in different environments.
作者
和栋庆
赵立杰
杨康
刘天福
刘寻
HE Dong-qing;ZHAO Li-jie;YANG Kang;LIU Tian-fu;LIU Xun(College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;Liaoning Provincial Key Laboratory of General Aviation,Shenyang Aerospace University,Shenyang 110136,China;Design Department,Liaoning General Aviation Academy,Shenyang 110136,China)
出处
《沈阳航空航天大学学报》
2023年第2期8-14,共7页
Journal of Shenyang Aerospace University
基金
国家自然科学基金(项目编号:51905355)。
关键词
适航符合性
带孔复合材料板
拉伸力学性能
湿热环境
破坏载荷
airworthiness compliance
porous composite plate
tensile mechanical properties
hot and humid environment
damage load
