基于补偿因子的模具型面补偿设计  

Design of mold surface compensation based on compensation factors

作　　者：乔巍 江永恒 Qiao Wei;Jiang Yongheng(China Building Materials(Shanghai)Aviation Technology Co.,Ltd.,Shanghai,200120,China)

机构地区：[1]中建材(上海)航空技术有限公司,上海200120

出　　处：《机械设计与制造工程》2023年第12期13-18,共6页Machine Design and Manufacturing Engineering

基　　金：中国建材集团攻关专项(2021YCJS02)。

摘　　要：提出一种基于补偿因子的模具型面补偿设计方法。以初始模具型面(理论外形)作为固化前复合材料构件的外形,首先通过固化变形有限元模型计算结果获得初始变形向量;然后将反向后的初始变形向量与补偿因子相乘,得到补偿向量;接着将补偿向量与初始模具型面叠加,获得补偿模具型面。建立以补偿因子为设计变量、以能够综合反映脱模后构件外形与理论外形偏差的无量纲参数(目标函数)为响应的代理模型,通过求解代理模型计算出最佳补偿因子,从而获得最优补偿模具型面。以U型复合材料梁的模具为例进行验证,结果表明:优化后构件外形的偏差减少了90%以上,优化效果显著。A mold surface compensation design method based on compensation factors is proposed.Taking the initial mold surface(theoretical shape)as the shape of the composite material component before curing,the initial deformation vector is calculated through the curing deformation finite element model.Then,the initial deformation vector is multiplied by the compensation factor and reversed to obtain the compensation vector.Then,the compensation vector is overlaid with the initial mold surface to obtain the compensation mold surface.A surrogate model is established based on the compensation factor design variables and a dimensionless parameter(objective function)that can comprehensively reflect the deviation between the component shape and the theoretical shape after demolding.The optimal compensation factor is calculated by solving the Surrogate model,and the optimal compensation die surface is obtained.Taking the mold of a U-shaped composite beam as an example,the results show that the deviation displacement of the optimized component shape can reduce by more than 90%,and the optimization effect is significant.

关 键 词：复合材料 固化变形 补偿设计 优化 

分 类 号：TB332[一般工业技术—材料科学与工程]