复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (6): 64-70.DOI: 10.19936/j.cnki.2096-8000.20250628.009

• 设计与工艺 • 上一篇    下一篇

复合材料制件转角区厚度偏差分析及改进研究

熊文磊1,2   

  1. 1.上海飞机制造有限公司,上海 201324;
    2.四川大学 高分子科学与工程学院,成都 610065
  • 收稿日期:2024-04-08 出版日期:2025-06-28 发布日期:2025-07-24
  • 作者简介:熊文磊(1988—),男,研究生,高级工程师,主要从事复合材料结构制造技术方面的研究,xiongwenlei@comac.cc。
  • 基金资助:
    中国商飞复材机身关键技术攻关(D-C233-0610)

Analysis and improvement of thickness deviation in the corner zone of composite part

XIONG Wenlei1,2   

  1. 1. Shanghai Aircraft Manufacturing Co., Ltd., Shanghai 201324, China;
    2. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
  • Received:2024-04-08 Online:2025-06-28 Published:2025-07-24

摘要: 采用热压罐工艺成型带转角的复合材料零件时,由于结构原因,复合材料零件的转角区存在压力差,导致零件固化后阴角偏厚,阳角偏薄。以帽形长桁为研究对象,对复合材料热压罐工艺转角区厚度偏差的原因及关键影响因素进行了分析,并针对性地进行了试验验证。根据理论分析及试验验证结果可知,转角区厚度偏差程度与转角区R角大小及厚度的比值(R/t)直接相关,R/t值越小转角区厚度偏差越大。在R/t值确定的情况下,减小试验件固化封装时转角区辅料的厚度和架桥风险,如在转角区采用裁开的玻璃布替代整块透气毡作为试验件固化时的导气材料,可明显改善转角区的厚度偏差和成型质量。

关键词: 复合材料, 热压罐工艺, 帽形长桁, 转角, 厚度

Abstract: When the composite parts with corner are manufactured by autoclave process, due to structural reasons, there is a pressure difference in the corner area of composite parts, resulting in a thicker concave corner and a thinner convex corner after curing. The hat stringer was taken as the research object to analyze the causes and key influencing factors of the thickness deviation of the corner of the composite parts manufactured by the autoclave process, and the experimental verification was carried out. According to the results of theoretical analysis and experimental verification, the thickness deviation of the corner is directly related to the ratio of the radius and the thickness of the corner (R/t). The smaller the R/t value, the greater the thickness deviation of the corner. When the R/t value is determined, the thickness deviation and forming quality of the corner can be significantly improved by reducing the thickness and bridging risk of the auxiliary materials in the corner zone during the curing package of the test parts, such as using the cut glass fabrics instead of the whole breather as the gas-conducting material during the curing of the parts.

Key words: composite, autoclave process, hat stringer, corner, thickness

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