CFRP composite panels are widely used,and different humid and hot conditions may have different effects on their mechanical properties.Since there is limited research on the influence of relative humidity on the performance of CFRP panels connection,a model for analyzing the connection of composite materials under humid and thermal conditions,based on the hygrothermal effects of composite single-layer plates,is established.Using this model,finite element analysis is conducted on the open-hole tensile of hybrid connections for CFRP composite laminates under four different hygrothermal environments with relative humidity of 20％,40％,60％,and 80％.The stress distribution under different humid and hot conditions is compared to reveal the influence of such environments on the hybrid connection performance of CFRP composite panels.Additionally,the stress distribution of different connection methods for CFRP laminates under the same humid and hot conditions is analyzed using finite element methods to clarify the performance influence of relative humidity on various connection methods.The results indicate that the model can predict the mechanical properties of CFRP composite panels under different hu-mid and hot conditions,the performance degradation of the adhesive layer in hybrid connections occurs earlier with higher relative humidity,and the maximum stress that hybrid connections can withstand is also lower with increased relative humidity.
关键词
复合材料/湿热环境/模型/仿真方法/混合连接
Key words
composite material/humid and hot conditions/model/simulation method/hybrid con-nections
维普
万方数据