| 外部气体辅助注塑制品翘曲变形数值模拟 |
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| 引用本文： | 肖清武,柳和生,黄益宾. 外部气体辅助注塑制品翘曲变形数值模拟[J]. 中国塑料, 2020, 34(3): 48-53. DOI: 10.19491/j.issn.1001-9278.2020.03.008 |
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| 作者姓名： | 肖清武 柳和生 黄益宾 |
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| 作者单位： | （1.南昌大学聚合物成型研究室，江西 南昌 330031；2.上饶师范学院，江西省塑料制备成型重点实验室， 江西上饶334001） |
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| 基金项目： | 江西省高等学校科技落地计划项目(KJLD13087)。 |
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| 摘 要： | 基于聚合物黏弹性理论与外部气体辅助注塑（EGAIM）的特点，构建了EGAIM气体保压阶段及脱模后自然冷却阶段制品内应力?应变的力学模型。在此基础上，采用耦合有限元法（FEM）对EGAIM平板制件的翘曲变形进行模拟计算，模拟结果与实验结果基本一致，验证了所建计算模型有效可靠。
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| 关 键 词： | 外部气体辅助注塑 力学模型 耦合有限元法 翘曲变形 |
| 收稿时间： | 2019-08-26 |
Numerical Simulation on Warpage of External Gas-Assisted Injection-Molded Parts |
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| XIAO Qingwu,LIU Hesheng,HUANG Yibin. Numerical Simulation on Warpage of External Gas-Assisted Injection-Molded Parts[J]. China Plastics, 2020, 34(3): 48-53. DOI: 10.19491/j.issn.1001-9278.2020.03.008 |
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| Authors: | XIAO Qingwu LIU Hesheng HUANG Yibin |
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| Affiliation: | (1.PolymerProcessing Laboratory of Nanchang University , Nanchang 330031, China；2.The KeyLaboratory of Jiangxi Province on Preparation of Materials, Shangrao Normal University, Shangrao 334001, China) |
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| Abstract: | Based on the viscoelastic theory of polymers and the characteristics of external gas-assisted injection molding(EGAIM),a mechanical model for the stress-strain in both gas-packing stage and natural cooling stage of EGAIM was established. According to this mechanical model,the warpage of flat parts molded by EGAIM was simulated by a coupled finite element method. The simulation results were basically consistent with the experimental results,indicating that the model was effective and feasible. |
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| Keywords: | external gas-assisted injection molding mechanical model coupled finite element analysis warpage |
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