注射模浇口位置优化的设计空间确定方法  

Determination of approximate feasible space for gate optimization of injection mold

作　　者：翟明[1] 顾元宪[1] 申长雨[2] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116024 [2]郑州大学橡塑模具国家工程研究中心,郑州450002

出　　处：《计算力学学报》2003年第4期483-486,共4页Chinese Journal of Computational Mechanics

基　　金：国家重点基础研究专项经费 (G1 9990 32 80 5);国家高技术研究发展计划专项经费;高等学校骨干教师资助计划资助课题

摘　　要：在注射模具的浇口位置优化中 ,给出确定可行设计空间的一种方法。在总注射速率一定的情况下 ,通过对给定浇口的注射速率进行优化 ,估计熔体在型腔中流动所受阻力及流长 ,确定了单浇口位置可行设计空间。Based on the results of flow rate optimization, a method to determine the approximate feasible space for single gate was proposed. Numerical simulation of injection mold filling process is combined with the design optimization method to find the optimum injection rate for two given gates to achieve balanced flow. The objective function is expressed in terms of the maximum and minimum times of boundary filling. Design sensitivities are evaluated using the finite difference method and the optimization model is solved with SLP algorithm. The resistance for polymer melt advancing in the cavity can be determined according to the optimum injection rate and the approximate feasible space for single gate was determined accordingly. Numerical examples are given to demonstrate the effect of the proposed method.

关 键 词：注射模具 浇口位置 优化 可行设计空间 注射速率 注射成型 塑料加工 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]