摘要
针对树脂基复合材料构件固化过程中的固化翘曲变形这一关键技术问题,通过引入剪切系数的方法来代替固化过程中模具与复合材料之间的相互作用,建立了预报树脂基复合材料构件固化变形的数值计算模型。通过少量实验数据来确定模具与复合材料之间的剪切系数,进而预测复合材料构件的固化变形。通过与文献中实验结果的比较证明了所建立的模型具有较高的可靠性。实验与计算结果表明,该模型能够在不考虑复杂的材料参数变化的情况下对不同结构尺寸及不同工艺参数下的复合材料构件的固化变形进行较为准确地预测。
A numerical model was proposed to predict the process-induced deformation of composite parts, one of the most im- portant problems in the curing process of composite structures, by introducing a shear coefficient to replace the tool-part interae- tion between the tool and composite laminates in cuing process. A parametric study was performed to obtain the magnitude of the coefficient for tool-part interaction by only a few test data. Results from the numerical model was compared with experimental data publicly published and good agreement was obtained, despite some simplifying assumptions made in the analytical model. It is also shown that this model could successfully predict processing deformations of the composite parts of different dimensions under different processing conditions when complicated changes of the material parameters are neglected.
出处
《材料开发与应用》
CAS
2016年第2期42-48,共7页
Development and Application of Materials
基金
西安市科技计划项目CXY1439(2)
