| 聚合物注塑内应力和翘曲变形的数值模拟 |
| |
| 引用本文： | 吴海宏,赵振峰,黄明,申长雨.聚合物注塑内应力和翘曲变形的数值模拟[J].高分子材料科学与工程,2007,23(6):16-19. |
| |
| 作者姓名： | 吴海宏 赵振峰 黄明 申长雨 |
| |
| 作者单位： | 郑州大学国家橡塑模具工程中心,河南郑州,450003 |
| |
| 基金项目： | 国家自然科学重大项目资助(10590352) |
| |
| 摘 要： | 由聚合物粘弹性理论和注塑成型原理出发,考虑了聚合物玻璃态的非线性粘弹性响应,采用新的四元件粘弹性力学模型模拟计算注塑制品冷却过程中内应力的形成与发展。在此基础上,采用改进的Allman膜单元1]和离散Kirchhoff板单元2]组合生成的板壳单元,模拟计算注塑件的翘曲变形,计算结果与实验结果一致,计算精度有所提高。
|
| 关 键 词： | 注塑 四元件力学模型 内应力 翘曲 |
| 文章编号： | 1000-7555（2007）06-0016-04 |
| 修稿时间： | 2006-07-24 |
Numerical Simulation About Internal Stress and Warpage of Injection Molded Polymers |
| |
| WU Hai-hong,ZHAO Zhen-feng,HUANG Ming,SHEN Chang-yu.Numerical Simulation About Internal Stress and Warpage of Injection Molded Polymers[J].Polymer Materials Science & Engineering,2007,23(6):16-19. |
| |
| Authors: | WU Hai-hong ZHAO Zhen-feng HUANG Ming SHEN Chang-yu |
| |
| Affiliation: | National Engineering Research Center for Advanced Polymer Processes Technology, Zhengzhou University, Zhengzhou 450003, China |
| |
| Abstract: | Based on both viscoelastic theory of polymers and the principle of injection molding,this article studied and simulated the internal stress of injection molded products by means of a new four elements viscoelastic mechanical model,which included non-linear viscoelastic response during glass transition temperature of polymers.According to the results of internal stress,a shin shell element composed improved Allman membrane element and discrete Kirchhoff bending element was put forward to simulate the warpage of injection molded products.The results of simulation revealed that the model has higher simulating accuracy. |
| |
| Keywords: | injection four elements mechanical model internal stress warpage |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
