复合材料层合结构热压罐固化过程的多物理场-热流固解耦数值求解  

Numerical Solution of Multiphysics-Thermo-Fluid-Solid Decoupling for the Curing Process of Composite Laminated Structure Autoclave

作　　者：李顶河 郭永刚 孟宪明[2] Li Dinghe;Guo Yonggang;Meng Xianming(Civil Aviation University of China,Tianjin 300300,China;China Automotive Technology Research Center Co.,Ltd.,Tianjin 300399,China)

机构地区：[1]中国民航大学,天津300300 [2]中国汽车技术研究中心有限公司,天津300399

出　　处：《航空科学技术》2022年第2期36-45,共10页Aeronautical Science & Technology

基　　金：国家自然科学基金面上项目(12072364)。

摘　　要：在复合材料层合结构热压罐固化成形过程中,温度场和固化度场的均匀性对残余应力和变形具有重要影响。对于厚度较大的复合材料层合结构,流动压实的影响不可忽略,同时热压罐空气热流场和模具温度场也会对复合材料结构内部的温度场产生较大影响。本文同时考虑固化动力学模型、热传导模型、残余应力模型、流动压实模型、热压罐热流场以及模具温度场,建立了复合材料热压罐热流固多物理场解耦求解模型;在多个时变参数影响下,分析了大厚度复合材料层合结构热压罐固化成形过程中残余应力、固化度场、温度场以及纤维体积分数的变化规律。The uniformity of the temperature field and the curing degree field during the curing and molding process of the composite material laminated structure has an important influence on the residual stress and deformation.For the composite material laminated structure with a larger thickness,the influence of flow compaction cannot be ignored,and at the same time the air heat flow field and mold temperature field of the autoclave will also have a greater impact on the temperature field inside the composite structure.This paper also considers the curing kinetics model,the heat conduction model,the residual stress model,the flow compaction model,and the autoclave heat flow field and mold temperature field,and a decoupling solution model of thermo-fluid-solid multiphysics for composite material autoclave is established.Under the influence of several time-varying parameters,the change law of residual stress,curing degree field,temperature field and fiber volume fraction during the curing process of large-thickness composite laminated structure in autoclave is analyzed.

关 键 词：复合材料 多场耦合 热压罐 固化 模具 

分 类 号：TB332[一般工业技术—材料科学与工程]