开口尺寸和铺层比例对复材层合板压缩性能的影响  

Effects of opening size and layering ratio on compression properties of composite laminates

作　　者：杨钧超 邓凡臣[1,2] 柴亚南 YANG Junchao;DENG Fanchen;CHAI Yanan(Structural Strength Laboratory of Composite Materials,Aircraft Strength Research Institute of China,Xi’an 710065,China;Aeronautics Science and Technology Key Laboratory of Full Scale Aircraft Structure and Fatigue,Xi’an 710065,China)

机构地区：[1]中国飞机强度研究所复合材料结构强度研究室,西安710065 [2]全尺寸飞机结构静力/疲劳航空科技重点实验室,西安710065

出　　处：《航空材料学报》2022年第6期88-96,共9页Journal of Aeronautical Materials

基　　金：民机科研项目(MJ-2015-F-038)。

摘　　要：为研究开口尺寸和铺层比例对复材层合板压缩性能的影响,对三种开口尺寸和铺层的复合材料层合板进行压缩实验,并采用电阻应变计测量开口区应变。结果表明:开口尺寸越大,0°层比例越低,孔边应变水平越高,而应变分布梯度更小,从而大开口复合材料层合板的压缩强度值越低。随后,基于Puck失效准则,建立大开口复合材料层合板的渐进损伤分析模型,对层合板压缩失效过程进行模拟。数值模拟得到的孔边应变分布以及压缩强度与实验结果吻合良好,建立的数值分析模型能够比较有效地预测含大开口的复合材料层合板的压缩性能。In order to study the effect of opening size and layering ratio on the compression performance,the compression experiments of composite laminates with three opening sizes and ply were carried out.The strains near the opening area were measured by resistance strain gauges.The experimental results show that the larger the opening size,the lower the 0° layer ratio,the higher the strain level at the hole edge,and the smaller the strain distribution gradient,thus the lower the compressive strength of composite laminates with large openings.Then,based on the Puck failure criterion,a progressive damage analysis model of largeopening composite laminates was established to simulate the compression failure process of laminates.The compressive strength and the strain distribution of the hole edge obtained by numerical simulations are in good agreement with the experimental results.The numerical analysis model can effectively predict the compression performance of composite laminates with large openings.

关 键 词：复合材料层合板 大开口 铺层比例 开口尺寸 压缩强度 

分 类 号：V258[一般工业技术—材料科学与工程]