中国塑料 ›› 2016, Vol. 30 ›› Issue (11): 84-87 .DOI: 10.19491/j.issn.1001-9278.2016.11.015

• 加工与应用 • 上一篇    下一篇

基于空调导风板成型工艺的Kriging模型适应度研究

乔旭安   

  1. 重庆科创职业学院汽车工程学院
  • 收稿日期:2016-05-20 修回日期:2016-07-26 出版日期:2016-11-26 发布日期:2016-11-26

Fitness Study of Forming Process of Air Conditioner Deflectors Based on Kriging Model

  • Received:2016-05-20 Revised:2016-07-26 Online:2016-11-26 Published:2016-11-26

摘要: 以空调导风板注射成型为例,确定模具温度、熔体温度、充填时间、冷却时间、保压压力、保压时间为显著影响因素,翘曲变形为品质评价指标,采用正交试验法、拉丁超立方抽样法规划实验,利用Moldflow软件进行充填、保压、翘曲的注射成型模拟试验,以获取试验数据;结合评价指标越小越好的特点,建立本问题的适应度函数,通过适应度曲线的绘制,分析高斯函数(gauss)、广义幂指数函数(expg)和幂指数函数(exp)3种核函数下Kriging近似模型应用于塑料注射成型的适应程度。结果表明,采用gauss函数作为核函数建立的Kriging模型所对应的适应度函数的输出误差最小,适应度最好。

关键词: 适应度, 数值模拟, Kriging模型, 拉丁超立方抽样

Abstract: A wind deflector of air conditioners was taken as a typical example for injection molding in this paper. Based on the different processing parameters of air conditioner deflectors, three different kernel functions were adopted to figure out the fitness examination, and mold temperature, melt temperature, packing time, cooling time, pressure, pressure time was selected as significant factors. The Kriging model was constructed on the basis of Gaussian, generalized exponential and exponential kernel functions, and then the fitness function was established. The results suggested that the Gaussian function was the most appropriate kernel one for the simulation of forming process of air conditioner deflectors.

Key words: fitness, numerical simulation, Kriging model, Latin hypercube sampling method