碳纤维复合材料固化变形预报方法对比

doi:10.19936/j.cnki.2096-8000.20231128.015

摘要/Abstract

摘要： 碳纤维复合材料固化变形引起复合材料制件装配困难、残余应力等问题。因此,非常有必要建立复合材料构件制造过程引起变形缺陷的准确预报方法。本文对半经验模型与CHILE模型这两种应用最为广泛的固化变形仿真分析方法进行对比,并通过热压罐成型工艺试验对其进行验证。试验结果表明,这两种模型均可准确地模拟复合材料层合板的固化变形行为,其模拟误差均小于10%。基于CHILE模型研究材料参数对固化变形的影响,发现对固化变形影响最大的是玻璃态横向热膨胀系数,其次是橡胶态横向化学收缩系数。

关键词: 复合材料, 固化变形, 有限元方法, 半经验模型, CHILE模型

Abstract: Process-induced distortion (PID) of the carbon fiber composite parts cause assembly difficulties and residual stresses. Hence, it is very necessary to establish an accurate prediction method for PID. In this study, we compared the two most widely used PID simulation methods: The semi-empirical model and the CHILE model, and validated them through the autoclave process experiment. Experimental results suggest that the two models can accurately predict the PID behavior of composite plates with the errors less than 10%. Based on the CHILE model, the influence of material parameters on PID was studied. The results suggest that the transverse coefficient of thermal expansion had a significant influence on the PID, then, the transvers coefficient of curing shrinkage also had an important influence on the PID.

Key words: composites, process-induced distortions, finite element method, semi-empirical simplified model, CHILE model

中图分类号:

TB332

罗玲, 张涛, 田智立, 刘雷波, 夏雅男, 李卓达, 魏洪峰. 碳纤维复合材料固化变形预报方法对比[J]. 复合材料科学与工程, 2023, 0(11): 108-115.

LUO Ling, ZHANG Tao, TIAN Zhili, LIU Leibo, XIA Yanan, LI Zhuoda, WEI Hongfeng. Comparison of process-induced distortion prediction methods of carbon fiber composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(11): 108-115.

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