| 橡胶辅助热压印成型数值模拟 |
| Numerical Simulation of Hot Embossing of Rubber-assisted |
| 投稿时间：2018-03-23 修订日期：2018-03-23 |
| DOI： |
| 中文关键词: 本构模型；橡胶硬度；PMMA 微沟道；厚度均匀性 |
| 英文关键词: Constitutive model rubber hardness PMMA microchannel thickness uniformity |
| 基金项目:湖南省重点研发计划（应用基础研究）项目（2015JC3008）与中南大学中央高校基本科研业务费专项资金资助（2017zzts643） |
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| 中文摘要: |
| 采用橡胶代替传统下模具，压印形成壳状结构的制品。通过单轴拉伸实验确定了各硬度橡胶的材料参数，以及确定了其橡胶本构模型为Mooney-Rivlin模型，并确定了聚甲基丙烯酸甲酯（PMMA）材料模型为广义Maxwell模型。利用有限元仿真软件ANSYS模拟其成型过程，研究了在温度、压力和橡胶硬度对PMMA成型过程的影响，仿真结果表明，随着温度升高、压力的增大，微沟道成型深度增大。橡胶硬度越小，成型效果越明显，但成型制品的厚度均匀性会受到影响 |
| 英文摘要: |
| The rubber instead of traditional mold was used to form the shell-shaped product. The material parameters of each hardness rubber were determined by uniaxial tensile test, and the rubber constitutive model was determined as the Mooney-Rivlin model. The Polymethyl methacrylate（PMMA）material model was defined as a generalized Maxwell model. The finite element simulation software ANSYS was used to simulate the molding process. The effects of temperature, pressure and rubber hardness were studied on the PMMA molding process. The simulation results show that the microchannel forming depth increases with the increase of temperature and pressure. The smaller the rubber hardness is ，the more obvious the molding effect is., but the thickness uniformity of the molded product will be affected. |
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