摘要
复合材料在固化过程中,由于材料各向异性、铺层非对称不均衡、构件布置不对称,温度改变和固化度的分布不均匀,导致不同程度的固化收缩,使复合材料结构件发生与预期形状不一样的固化变形。复合材料层合构件发生固化变形后,在装配过程中须进行校正。对固化变形的校正会增大整个构件的应力水平。特别在装配点附近的构件连接处,会产生较大的装配应力,对整体构件产生很不利的影响。本文研究固化变形校正装配的过程,并建立一套考虑固化变形校正装配破坏的分析方法。研究了复合材料固化变形的机理,并介绍了复合材料分层仿真的界面元方法。基于以上研究,在复合材料层合结构分析软件ADGS中,建立了一套较完整的复合材料整体化构件的装配破坏仿真分析模型。
The Curing deformation and stress are formed because of the anisotropic material, the imbalanced ply stac- king and the asymmetric layout of the components , as the uneven distribution of and temperature and curing degree of dif- ferent degrees of thermal expansion and curing shrinkage. The composite laminated component should be calibrated at the assemble points after the curing deformation process, which increased the stress level of the component especially for the joints area near the assemble point. It has a detrimental effect on the assembly process. In this paper, the affect of curing deformation process in assembly process and building a reasonable analysis method based on the curing deformation process is studied. The mechanism of curing deformation is studied and the use of the interface element in the simulation of the com- posite component is described . Based on the theory, a relatively complete analysis method of the simulation process of com- posite integrative component is proposed based on the ADGS software.
出处
《纤维复合材料》
CAS
2013年第3期21-26,共6页
Fiber Composites
基金
国家自然科学基金(11272340)
国家重点基础研究发展计划项目(2010CB731503)
关键词
复合材料
固化变形
分层仿真
装配应力
composite
curing deformation
Hierarchical simulation
assembly stress
