针对注塑成型随形冷却的流热力耦合拓扑优化方法研究  

Fluid-thermal-mechanical coupling topology optimization for cooling system in injection moulding

作　　者：于明豪 黄菀清 李征[1] 阮诗伦[1] 刘春太[2] 申长雨[1,2] YU Ming-hao;HUANG Wan-qing;LI Zheng;RUAN Shi-lun;LIU Chun-tai;SHEN Chang-yu(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Da Lian 116024,China;National Engineering Research Center of Mold & Die,Zhengzhou University,Zhengzhou 450002,China)

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》2021年第4期505-511,共7页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(11702053,11602050);111计划(B14013);工业装备结构分析国家重点实验室自主研究课题(S18110);中央高校基本科研业务费专项资金(DUT2019TD37)资助项目.

摘　　要：注塑成型在塑料工业生产中占据重要地位,注塑模具的散热能力影响着塑料制品的生产效率以及产品质量。本文基于变密度拓扑优化方法,以最小化结构平均温度为目标,研究了注塑模具冷却管道的拓扑优化问题。由于在注塑成型过程中模具会受到注塑机施加的克服塑件胀模力的巨大锁模力,故本文还将模具结构承载性能作为优化的评价指标。最终基于开源平台OpenFOAM对此三维流-热-力耦合拓扑优化问题进行求解,得到了具有制造可行性的冷却管道设计。Injection moulding plays an important role in the production of plastics and the cooling performance of injection moulds affects the productivity as well as quality of plastic products as well as product quality.This paper investigates the topology optimisation of the cooling system for injection moulds based on the density-based topology optimisation approach with the objective of minimising the average temperature of the structure.As the mould is subjected to a large clamping force applied by the injection moulding machine to overcome the expansion force of the moulded part during the injection moulding process,the structural load-bearing performance of the mould is also used as a constraint function.Based on the open source platform OpenFOAM,this 3D flow-thermal-mechanical coupled topology optimisation problem is solved and a manufacturing-feasible cooling system design is obtained.

关 键 词：流热力耦合拓扑优化 注塑成型冷却管道 散热器设计 

分 类 号：O343[理学—固体力学] O35[理学—力学]