摘要
以注塑成型制品中脱模后的最大Mises-Hencky残余应力为目标函数,运用基于Kriging代理模型及EI加点准则的序列优化方法,对聚碳酸酯材料制品进行了工艺参数(包括熔体温度、模具温度、注射速率、保压压力及保压时间)优化。算例结果表明,所提出方法可以有效地降低注塑件内的最大Mises-Hencky残余应力。在此基础上对充填阶段进行深入分析,用贝塞尔曲线控制方式代替常规的常速率充填控制方式,进一步降低了制件内的残余应力。
In this paper, the maximum mises-hencky residual stress after molding treated of the injection molded parts was as the objective function, and the sequential optimization algorithm based on the Kriging surrogate model and expected improvement sampling criterias were employed for the optimization of the polycarbonate material parts. The melting temperature, mold temperature, injection rate, packing pressure and packing time were taken into account as the design parameters in this optimization. Results showed that this optimization method could effectively reduce the maximum mises-hencky residual stress. On this basis, further study was taken on the effect of the filling stage. With the filling method changed into bezier curve control, the residual stress of injected part was further reduced.
出处
《塑料工业》
CAS
CSCD
北大核心
2015年第1期53-57,共5页
China Plastics Industry
基金
国家重点基础研究发展计划项目(2012CB025905)
111引智计划(B14013)
中央高校基本科研业务费专项资金资助
