用于人工肌肉纤维丝的“三明治”复合结构熔融机理仿真  

Simulation of the Melting Mechanism of the"Sandwich"Composite Structure Used for Artificial Muscle Fibers

作　　者：韩亚丽[1] 金壮壮 赵天 孙翰 朱文亮 史传棋 Yali Han;Zhuangzhuang Jin;Tian Zhao;Han Sun;Wenliang Zhu;Chuanqi Shi(School of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院机械工程学院,江苏南京211167

出　　处：《高分子材料科学与工程》2022年第1期97-104,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金青年基金资助项目(51205182);江苏省重点研发计划(社会发展项目)(BE2019724)。

摘　　要：研究了构成“三明治”结构的聚甲基丙烯酸甲酯(PMMA)/聚乙烯(PE)/环烯烃类共聚物弹性体(COCe)3种材料在不同温度场的熔融机理和成型过程,为后续人工肌肉纤维丝的制作提供数据参考。建立了基于标准κ-ε湍流模型的分段加热有限元仿真模型,通过设置不同参数对比研究进料速度、单元划分方式和边界条件设置对仿真结果的影响,实现高分子材料加热熔融凝固过程的仿真模拟。仿真结果表明,通过面映射和局部加密处理的方式划分网格得到的计算结果精度较高;控制进料速度约1mm/s时,材料能够得到充分加热,密度达到稳定,有利于材料的挤出成型。The melting mechanism and forming process of three kinds of polymer materials with sandwich structure under different temperature fields were studied to provide data reference for the subsequent fabrication of artificial muscle filaments.The finite element simulation model of segmented heating based on standardturbulence model was established.The effects of feeding speed,unit division mode and boundary conditions on the simulation results were compared by setting different parameters.The simulation of polymer heating,melting and solidifica-tion process was realized.The results show that the accuracy of the results is high by the method of surface map-ping and local refinement;when the feeding speed is controlled about 1 mm/s,the material can be fully heated to achieve stable density,which is conducive to the extrusion of the material.

关 键 词：人工肌肉纤维丝 标准κ-ε湍流模型 熔融机理 进料速度 

分 类 号：R318.08[医药卫生—生物医学工程]