摘要
复合材料因其高强轻质等特点被越来越广泛地应用于航空航天、船舶、车辆等领域,但复合材料的固化变形是阻碍其快速发展和应用的主要障碍之一。本文针对复合材料残余应力及固化变形的问题,阐述了引起残余应力和变形的机理,包括热膨胀属性的不匹配、聚合反应/结晶收缩、模具-零件的相互作用、树脂的流动压实、纤维褶皱或屈曲、温度和固化度的梯度分布,提出了包括固化参数的优化、模具补偿、零件-模具的相互作用优化、新型树脂的开发、新的固化工艺五种控制残余应力产生和固化变形方法,总结了控制固化变形方法中存在的问题,并展望了未来的研究方向。
Composite materials have been widely used in aerospace, marine, and automotive areas due to their excellent mechanical and light weight properties. However, cured deformation of composites is one of the obstacles to its rapid development and application. In the present review, the mechanism that causes residual stresses and deformations is elaborated, including the mismatch of thermal expansion properties, polymerization/crystallization shrinkage, tool-part interaction, resin flow and compaction, fiber wrinkling, and gradient distribution of temperature and curing degree. Several strategies to control the formation of residual stresses and deformations are proposed, including optimization of curing parameters, tool compensation, tool-part contact optimization, and the development of new resins and curing process. The problems exist in the corresponding strategies are summarized, and perspectives of the future developments in the field of process-induced distortions are recommended.
作者
何靓
朱攀星
俆小伟
王金云
HE Liang;ZHU Pan-xing;XU Xiao-wei;WANG Jin-yun(Research Laboratory of Manufacturing Technology of Composite Materials,AVIC Xi'an Aircraft Industry Group Company Ltd.,Xi'an 710089,China;Hebei Key Laboratory of Dual Media Power Technology,Handan 056017,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第7期121-128,共8页
Composites Science and Engineering
基金
水下金属燃料发动机关键技术研究(16211013D)。
关键词
复合材料
固化变形
固化参数
变形控制
残余应力
composite materials
cure-induced deformation
curing parameter
deformation control
residual stress
