摘要
针对玻璃纤维增强尼龙66复合材料无人机桨叶采用注射成型工艺制造时容易产生过大翘曲变形的问题,为减小该类零件的翘曲变形量,采用多因素正交试验法,运用注射成型模拟软件进行25次模拟试验,获得零件在熔体温度、模具温度、注射时间、保压时间、保压压力、周期时间6因素5水平下成型的翘曲变形量。通过极差分析和方差分析,确定各工艺参数对零件翘曲变形影响程度的大小排序,并得到零件的最优成型工艺参数方案。研究表明,在最优成型工艺参数方案下零件的最大翘曲变形量下降了近40%,收缩不均和取向因素是玻璃纤维增强尼龙66复合材料零件发生翘曲变形的主要原因。最后,通过对复合材料桨叶的实际制造证实了优化方案的合理性。
In view of the problem that glass fiber reinforced nylon 66 composite blades of unmanned aerial vehicle were prone to excessive warpage deformation when manufactured by injection molding,to reduce the amount of warpage deformation,the multi-factors orthogonal test method was carried out,the simulation tests were adopted by injection molding simulation software with twenty five times,and the amount of warpage deformation of composite blades under five levels and six factors of melt temperature,mold temperature,injection time,pressure holding time,packing pressure and period time was obtained. The influence degree of each process parameter on the amount of warpage deformation was ranked by range analysis and variance analysis,and an optimal scheme of forming process parameter was achieved. The research shows that the maximum amount of warpage deformation decreases by nearly 40% with the optimal scheme of forming process parameter and the main reasons for warpage deformation of glass fiber reinforced nylon 66 composite parts are regional shrinkage and orientation. Finally,the rationality of the optimal scheme was verified by the actual manufacture of a composite blade.
作者
王博
蔡安江
李正迁
李锋
刘清涛
WANG Bo;CAI An-jiang;LI Zheng-qian;LI Feng;LIU Qing-tao(School of Mechanical&Electrical Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,China;School of Aerocraft,Xizan Aeronautical University,Xi'an 710077,China;School of Construction Machinery,Chang'an University,Xi'an 710064,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2020年第1期68-74,共7页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51475352)
中央高校基金高新技术项目(300102259201)
关键词
注射成型
玻璃纤维
复合材料
正交试验
翘曲变形
injection molding
glass fiber
composite
orthogonal experiment
warpage deformation
