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复合材料C型梁回弹变形影响因素权重分析
引用本文:杨青,刘卫平,余木火,晏冬秀,陈萍,贾丽杰,徐鹏,魏冉.复合材料C型梁回弹变形影响因素权重分析[J].航空制造技术,2017(7).
作者姓名:杨青  刘卫平  余木火  晏冬秀  陈萍  贾丽杰  徐鹏  魏冉
作者单位:1. 中国商飞上海飞机制造有限公司上海200436;东华大学民用航空复合材料协同创新中心上海201620;2. 东华大学民用航空复合材料协同创新中心上海201620;3. 中国商飞上海飞机制造有限公司上海200436
基金项目:中国博士后科学基金项目,中国商飞中欧合作专项
摘    要:复合材料C型梁制造回弹变形的主要影响因素有几何结构、铺层间剪切效应和模具作用等。在复材固化过程中,这些因素共同作用,导致构件发生变形,对构件的几何精度产生不利影响。针对大飞机结构中常用的复合材料C型梁,通过理论分析、有限元计算和试验测量等方法,研究了上述因素对回弹变形的影响机理及其作用的权重,为精确预测和控制C型梁的回弹提供了依据。

关 键 词:复合材料C型梁  固化  回弹  影响因素权重

Weighting Analysis of Factors of Spring-Back for C-Shaped Composite Spars
YANG Qing,LIU Weiping,YU Muhuo,YAN Dongxiu,CHEN Ping,JIA Lijie,XU Peng,WEI Ran.Weighting Analysis of Factors of Spring-Back for C-Shaped Composite Spars[J].Aeronautical Manufacturing Technology,2017(7).
Authors:YANG Qing  LIU Weiping  YU Muhuo  YAN Dongxiu  CHEN Ping  JIA Lijie  XU Peng  WEI Ran
Abstract:Affect factors of spring-back for C-shaped composite spars generally include geometry,shear effect between plies,and mold,et al.The factors often bring to process-induced distortion in composite structures which would lead to bad geometric accuracy.Through analyzing the factors by theory approach,the FE calculation and experiment method,the spring-back values of C-shaped spars in structures of aircraft are calculated and the weight values of the factors are also estimated,which could be used to provide some bases for distortion prediction and control for C-shaped composite spars.
Keywords:C-shaped composite spar  Curing process  Spring-back  Weight value of the factor
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