Effect of Prestress on Cure-Induced Deformation of C-Shaped Composite Parts

ZHENG Xitao; SONG Luyang; ZHANG Chi; LIU Zhendong; LU Tuo

doi:10.16080/j.issn1671-833x.2023.15.104

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Effect of Prestress on Cure-Induced Deformation of C-Shaped Composite Parts

更新时间：2025-10-30

- Effect of Prestress on Cure-Induced Deformation of C-Shaped Composite Parts
- Aeronautical Manufacturing Technology Vol. 66, Issue 15, Pages: 104-111(2023)
- 作者机构：
  
  1. 西北工业大学航空学院,西安,710072
  2. 西北工业大学飞行器复合材料结构研究所,西安,710072
  3. 北京理工大学,北京,100081
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2023.15.104
  CLC：
- Published：2023
- 稿件说明：
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郑锡涛，宋璐阳，张驰，刘振东，路拓. 预应力对复合材料C型结构固化变形的影响[J]. 航空制造技术, 2023, 66(15): 104-111.

ZHENG Xitao, SONG Luyang, ZHANG Chi, LIU Zhendong, LU Tuo. Effect of Prestress on Cure-Induced Deformation of C-Shaped Composite Parts[J]. Aeronautical Manufacturing Technology, 2023, 66(15): 104-111.
郑锡涛，宋璐阳，张驰，刘振东，路拓. 预应力对复合材料C型结构固化变形的影响[J]. 航空制造技术, 2023, 66(15): 104-111. DOI： 10.16080/j.issn1671-833x.2023.15.104.

ZHENG Xitao, SONG Luyang, ZHANG Chi, LIU Zhendong, LU Tuo. Effect of Prestress on Cure-Induced Deformation of C-Shaped Composite Parts[J]. Aeronautical Manufacturing Technology, 2023, 66(15): 104-111. DOI： 10.16080/j.issn1671-833x.2023.15.104.

摘要

C 型结构是航空复合材料结构中一种常用的结构形式，其在制造过程中产生的固化变形会严重影响航空结构的装配。本文针对C 型结构提出了一种通过施加预应力来减少固化变形的方法，建立了预测C 型结构固化变形的数值分析模型，并设计了3 种不同铺层的C 型结构，分别对每种铺层形式的结构施加3 种水平的预应力，对其固化变形进行研究。研究结果表明，有限元预测结果与试验结果吻合较好，验证了该模型的准确性和有效性，通过施加合理的预应力可以减少这3 种铺层的C 型结构90% 以上的固化变形。

Abstract

C-shaped part is one of the common parts in aviation composite structures. The cure-induced deformation when manufacturing will seriously affect the assembly of aviation structures. In this paper

a method of reducing curing deformation by applying prestressing is proposed for C-shaped part structure

and a numerical analysis model for predicting curing deformation of C-shaped part structure is established. To verify this model

three kinds of C-shaped parts of different layup sequence is manufactured at varying to prestress levels. The experimental results and numerical results have a good agreement

showing the accuracy and validity of this finite element model. It has been shown by the results that once the proper prestress is loaded

the deformation of these three layup sequence parts could reduced over 90%.

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