T型长桁加筋壁板胶层厚度的影响因素研究  

Study on Influencing Factors of Adhesive Thickness of T-Shaped Stringer Stiffened Panel

作　　者：闫超 林德志 刘钧天 刘婉玥 吕芳萱 YAN Chao;LIN Dezhi;LIU Juntian;LIU Wanyue;LÜFangxuan(COMAC Shanghai Aircraft Manufacturing Co.,Ltd.,Shanghai 201324,China;COMAC Composites Center,Ltd.,Shanghai 201324,China)

机构地区：[1]中国商飞上海飞机制造有限公司,上海201324 [2]中国商飞复合材料中心,上海201324

出　　处：《航空制造技术》2023年第22期92-98,共7页Aeronautical Manufacturing Technology

基　　金：科技部国家重点研发项目(2020YFB0311503)。

摘　　要：胶层厚度对加筋壁板胶接强度至关重要。以四筋T型长桁加筋壁板为对象,采用三坐标机测量了T型长桁的回弹变形,对壁板进行胶接面剖切观察并测量了胶层厚度,研究了T型长桁回弹变形、缘条宽度和缘条边缘倒角对加筋壁板胶层厚度的影响。同时,采用有限元软件ABAQUS对T型长桁回弹变形和缘条受压变形进行了仿真计算。结果表明,本试验中的T型长桁的回弹变形约0.4°~0.5°,回弹变形对胶层厚度具有明显影响。当缘条宽度22mm时,长桁边缘到长桁腹板胶层厚度呈现由厚再到薄的变化趋势;当缘条宽度73 mm时,长桁边缘到长桁腹板胶层厚度呈现由薄到厚再到薄的变化趋势。长桁边缘倒角可以有效地改善长桁边缘附近的胶层厚度,避免该位置由于蒙皮褶皱导致的胶层厚度突变,进而提高胶接质量。在实际零件研制过程中,可以从以上几个方面进行控制,改善胶层厚度,保证零件胶接强度。The adhesive thickness is very important to the bonding strength of the stiffened panel.Taking fourbar T-shaped stringer stiffened panel as the object,measure the springback of T-shaped stringer by tri-ordinate measuring machine,observe the bonding section and measure the adhesive thickness of the panel by sectioning,to explore several influencing factors,including springback deformation,flange width and edge chamfer of the T-shaped stringer on adhesive thickness.Meantime,simulate the springback and the flange deformation of T-shape stringer by finite element software ABAQUS.The result shows that the springback is 0.4°–0.5°,which has a significant effect on the adhesive thickness.The thickness of adhesive layer from the stringer edge to web changes from thick to thin when flange width is 22 mm.The thickness of adhesive layer from the stringer edge to web changes from thin to thick and then to thin when flange width is 73 mm.The adhesive thickness can be improved by edge chamfer,avoiding sudden change of adhesive thickness because of skin wrinkle,and then improve bonding quality.During part manufacturing,the adhesive thickness can be significantly improved by controlling the above factors to ensure the bonding strength of the parts.

关 键 词：复合材料 T型长桁 加筋壁板 胶层厚度 回弹变形 胶接 

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]