考虑变比热的平板注塑件非对称冷却瞬态温度场数值模拟  

Numerical Simulation of the Transient Temperature Field in Nonsymmetrically Cooled Injection-Molded Plate Part Considering Variable Specific Heat of Polymers

作　　者：王博[1] 陈利民[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《塑料》2006年第6期83-86,10,共5页Plastics

基　　金：国家自然科学基金(20304008);四川大学青年科学基金(4320405)资助

摘　　要：对注塑平板制件非对称冷却过程进行了分析,通过近似假设,建立一维非稳态传热模型。考虑无定形聚合物和结晶型聚合物的比热对温度的依赖性,利用分段线性函数拟合聚合物的比热-温度曲线,通过对空间域和时间域的离散化,运用有限差分数值方法,模拟了无定形聚合物和结晶型聚合物注塑平板制件在模具中非对称冷却的一维瞬态温度场。One-dimensional unsteady state heat transfer model was introduced to analyze the non-symmetrically cooling process of injection-molded plate part. The temperature dependent specific heat curves of both amorphous and crystalline polymers were fitted by segmenial linear functions. The finite difference method was exploited to numerically simulate the transient temperature field in non-symmetrically cooled injection-molded plate parts.

关 键 词：注塑平板制件 非对称冷却 瞬态温度场 有限差分 变比热 

分 类 号：TP391.75[自动化与计算机技术—计算机应用技术]