CAJ | 학술논문

翘曲变形对具有配合关系的两塑件的装配有严重影响。文章针对传统优化方法提出一种高效、精准的优化方法。基于Kriging代理模型，通过实验设计，建立工艺参数与翘曲值之间近似的函数关系；应用遗传算法，对工艺参数进行全局寻优得到翘曲值最小的工艺参数组合；在优化设计的基础上，研究各工艺参数对塑件翘曲值的影响趋势。结果表明，注射时间和保压压力对其影响较大，同时Kriging模型中的相关函数参数能够反映各工艺参数对翘曲值的非线性程度。
교곡변형대구유배합관계적량소건적장배유엄중영향。문장침대전통우화방법제출일충고효、정준적우화방법。기우Kriging대리모형，통과실험설계，건립공예삼수여교곡치지간근사적함수관계；응용유전산법，대공예삼수진행전국심우득도교곡치최소적공예삼수조합；재우화설계적기출상，연구각공예삼수대소건교곡치적영향추세。결과표명，주사시간화보압압력대기영향교대，동시Kriging모형중적상관함수삼수능구반영각공예삼수대교곡치적비선성정도。
The warpage of plastic parts has serious effect on their assembly .In this paper ,an efficient and accurate optimization method is proposed to replace the traditional optimization methods .Based on Kriging model ,the approximate relationships be‐tween processing parameters and warpage values are established through design of experiment ,and the genetic algorithms are ap‐plied to the global optimization to get the best processing parameters when the warpage value is minimum .Finally ,on the basis of the optimization design ,the effects of processing parameters on the warpage values of plastic parts are discussed .The results show that the injection time and the holding pressure have great influence on the warpage ,and the parameter of correlation func‐tion in the Kriging model can reflect the nonlinearity degree of various processing parameters on the warpage values .