矫形力与垫片补偿对复合材料装配结构变形及螺栓夹紧力的影响
Effect of Orthopedic Forces and Shim Compensation on Deformation of Composite Assembly Structure and Bolt Clamping Force
赵付山 1安鲁陵 1岳烜德 1张永明 1李雨霏1
作者信息
- 1. 南京航空航天大学 机电学院,江苏 南京 210016;南京航空航天大学 江苏省精密与微细制造技术重点实验室,江苏 南京 210016
- 折叠
摘要
飞机复合材料构件成型精度较低进而导致装配间隙,可施加矫形力减小甚至消除间隙,若存在较大间隙需施加垫片进行补偿.以复合材料壁板为对象,通过试验的方法,观测壁板在矫形、螺栓连接以及撤矫形力过程的变形,以及矫形力撤出后螺栓夹紧力的变化.结果表明:壁板变形量随矫形力的增大而增大,相应垫片补偿尺寸减小,当矫形力达一定程度时,变形量趋于稳定;撤矫形力后,壁板回弹量随矫形力值近似呈线性关系,当矫形力达 150 N时,最大回弹量为 0.117 mm,占装配间隙的 7.83%;撤矫形力后各区域螺栓夹紧力都有增加趋势,其中壁板与骨架存在间隙的区域,夹紧力增长相对明显,夹紧力变化最大为 50 N,增长率为 1%左右.
Abstract
The assembly clearance caused by low accuracy of aircraft composite component formation can be reduced or even eliminated by applying a straightening force,and a larger gap can be compensated by applying a shim.Composite wall plate was taken as reserch subject to observe its deformation during the process of straightening,bolting and withdrawal of straightening force as well as the change of bolt clamping force after the withdrawal of straightening force by the test method.The results show that the deformation of the wall plate increases with the increase of the orthopedic force,the corresponding shim compensation size decreases,and when orthopedic forces reach a certain degree,the deformation tends to stabilize.After the withdrawal of the orthopedic force,the rebound of the wall plate assumes approximate linear relationship with the value of the orthopedic force,and when orthopedic forces reach 150 N,the maximum rebound is 0.117 mm,accounting for 7.83%of the assembly gap.After the withdrawal of the orthopedic force,the bolt clamping force in each area has a tendency to increase,among which,the region where the gap between the wall plate and the skeleton exists,the clamping force grows relatively obviously,and when the maximum change in clamping force is 50 N,the growth rate reaches around 1%.
关键词
飞机装配/复合材料/矫形力/填隙补偿Key words
aircraft assembly/composite materials/orthopedic forces/gap-filling compensation引用本文复制引用
基金项目
国家自然科学基金项目(5197051852)
江苏省精密与微细制造技术重点实验室基本科研业务重点项目(ZAA1400105)
出版年
2024
国家科技期刊平台
NSTL
万方数据