摘要
固化变形一直是困扰复合材料零件后期快速、精确装配的重要问题之一,通过在复合材料零件装配面设计补偿层,待固化后再借助数控机床加工至理论型面,为复合材料零件精确制造提供了新的思路。通过半圆型复合材料零件固化变形仿真和实验验证发现,补偿层材料体系、铺层角度等均会影响补偿层与主体结构共固化试样的固化变形规律,其中,补偿层材料的纤维种类对零件固化变形影响最大,树脂种类次之,补偿层铺层角度不对称也会增加零件固化变形量,通过对称铺层处理,可有效控制变形量。在材料和铺层角度均匀对称的情况下,补偿层厚度变化不会导致固化变形规律及变形量状态的改变。经过机加处理后,试样会发生二次变形,但是机加后半圆型件在自由状态下型面最大变形<1mm,相比于无补偿的试样,变形量减小约33%,可满足工程装配需求。
Curing deformation has been one of the important problems that plague the rapid and accurate assembly of composite components.The compensation layer was designed on the assembly surface of composite parts and then machined to the theoretical surface after curing with the help of CNC machine,which provided a new method for the accurate manufacture of composite components.The curing deformation of semi-circular composite parts was studied through simulation and experimental verification,which indicated that the material system,layer angle of compensation layer could affect curing deformation law of co-curing samples,and among them,the fiber type of the compensation layer material had the most profound effect on the curing deformation of the parts,followed by the resin type.The asymmetric layer angle of compensation layer could also increase parts curing deformation,and the deformation could be effectively controlled by symmetrical layering.In the case of the same material and asymmetric layer angle,the change of compensation layer thickness would not lead to the change of curing deformation law and deformation state.Though,the secondary deformation happened after the subsequent processing,the maximum deformation of semi-circular composite parts under free state was less than 1mm,which was reduced by about 33%compared to the parts without compensation and could meet the engineering assemble requirements.
作者
彭坚
赵文琛
祝君军
梁凇源
Peng Jian;Zhao Wenchen;Zhu Junjun;Liang Songyuan(Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610092)
出处
《化工新型材料》
CAS
CSCD
北大核心
2023年第S01期267-272,共6页
New Chemical Materials
关键词
复合材料
固化变形
补偿层
仿真
外形测量
composite material
curing deformation
compensatory layer
simulation
shape measurement
作者简介
彭坚(1991-),男,硕士,男,工程师,研究方向为先进复合材料,E-mail:pengjiancac@163.com。
