摘要
注塑成型生产过程中,不均匀的模具温度分布容易导致制品出现翘曲等缺陷,模具温度又会影响制品的冷却速率,可以通过模拟注塑模具温度场优化冷却水路,以改善注塑制品的质量及生产效率。基于此,对有限体积法(FVM)模拟注塑温度场的算法进行了研究,详细描述了模具稳态温度场的瞬态型腔热流边界的等效办法。采用现今最常用的边界元法模拟注塑成型模具温度场时只能查看型腔面的温度,而采用有限体积法对三维模型模拟能够获知模型全域的温度场。为了实现模具与熔体之间的解耦计算,采用了循环迭代的求解方式,以支架作为实例模型进行了模拟分析,并与商业软件的结果进行了对比,结果表明FVM模拟注塑模具稳态温度场算法是正确的。
In the process of injection molding production,uneven mold temperature distribution is easy to lead to warping and other defects of products,and the mold temperature will affect the cooling rate of products.The quality and production efficiency of injection molding products can be improved by simulating the temperature field of injection mold.Based on this,the finite volume method(FVM)to simulate the injection molding temperature field is studied,and the equivalent method of the transient cavity heat flow boundary of the mold steady temperature field is described in detail.Currently,when the most commonly used boundary element method is used to simulate the temperature field of injection molding mold,only the temperature of the cavity surface can only be viewed,while using the finite volume method to simulate the three-dimensional model,the temperature field in the whole range of the model can be obtained.In order to realize the decoupling calculation between mold and melt,this paper adopts the iterative solution method,the bracket is taken as the case model for simulation analysis,and compares with the results of commercial software.The results show that the algorithm of FVM to simulate the steady-state temperature field of injection mold is correct.
作者
冯漾漾
丁浩亮
严波
FENG Yangyang;DING Haoliang;YAN Bo(School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200030,China;Aerospace Materials and Technology Research Institute,Beijing 100076,China)
出处
《模具技术》
2023年第3期23-28,共6页
Die and Mould Technology
关键词
注塑成型
有限体积法(FVM)
模具温度场
数值模拟
injection molding
finite volume method(FVM)
mold temperature field
numerical simulation
