摘要
针对典型复合材料结构固化成型过程中变形难以控制的问题,本文对典型复合材料结构的固化变形进行仿真预测,从固化工艺和模具补偿两方面对固化变形加以控制和验证。固化工艺方面以各设计点变形数据为基础确定了最优固化工艺曲线,模具补偿方面提出了一种构件有限元模型自适应调整的方法,综合考虑固化工艺参数与模具型面补偿采用了一种基于全局补偿量的协同控制方法。结果表明,通过仿真模拟L形构件的固化变形误差为12.4%,借助响应面优化算法得到的L形构件最优固化工艺曲线其固化变形预测值与各试验设计点最大变形的最小值偏差不超过3.3%;T形加筋壁板有限元模型经自适应调整后,对于下表面与目标型面之间的偏差距离,数值模拟值与试验测量值的最大相对误差为17.20%。通过全局补偿量的协同控制方法对半筒形壁板的模具进行补偿,其固化变形最大值相比于传统单一模具型面补偿控制方法降低了接近90%。
In response to the problem of difficult control of deformation during the curing process of typical composite material structures,the curing deformation of typical composite structures was simulated and predicted,and the curing deformation was controlled and verified from two aspects:curing process and die compensation.In terms of curing process,the optimal curing process curve was determined based on the deformation data of each design point.In terms of mold compensation,a method of adaptive adjustment of the finite element model of the component was proposed.A collaborative control method based on global compensation was adopted to comprehensively consider the curing process parameters and mold surface compensation.The results show that the solidification deformation error of L-shaped components through simulation is 12.4%.The optimal solidification process curve of L-shaped components obtained by response surface optimization algorithm has a deviation of no more than 3.3%between the predicted solidification deformation value and the minimum maximum deformation value at each experimental design point.After adaptive adjustment of the T-shaped reinforced wall panel finite element model,the maximum relative error between the numerical simulation value and the experimental measurement value for the deviation distance between the lower surface and the target profile is 17.20%.The mold of the semi cylindrical wall panel is compensated by the collaborative control method of global compensation,and the maximum curing deformation is reduced by nearly 90%compared with the traditional single mold surface compensation control method.
作者
杨智勇
左小彪
范春浩
易美军
鲍益东
王超
胡俊山
李艳
YANG Zhiyong;ZUO Xiaobiao;FAN Chunhao;YI Meijun;BAO Yidong;WANG Chao;HU Junshan;LI Yan(Aerospace Research Institute of Materials&Processing Technology,Beijing 100076;College of Mechanical and Electronic Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2024年第2期54-61,共8页
Aerospace Materials & Technology
基金
基础科研计划项目。
关键词
固化变形
仿真预测
最优固化工艺
自适应调整
协同控制
验证
Curing deformation
Simulation and prediction
The optimal curing process
Adaptive adjustment
Synergetic control
Verification
