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| 高聚物挤出胀大的迭代稳定分步算法模拟 | |
| 引用本文： | 王伟,李锡夔,韩先洪. 高聚物挤出胀大的迭代稳定分步算法模拟[J]. 机械工程学报, 2010, 46(2). DOI: 10.3901/JME.2010.02.047 |
| 作者姓名： | 王伟 李锡夔 韩先洪 |
| 作者单位： | 1. 大连理工大学工业装备结构分析国家重点实验室,大连,116023;青岛科技大学橡塑材料与工程教育部重点实验室,青岛,266042 2. 大连理工大学工业装备结构分析国家重点实验室,大连,116023 3. 上海交通大学塑性成形工程系,上海,200030 |
| 基金项目： | 国家自然科学基金资助项目(10590354,10272027) |
| 摘 要： | 重构引入有限增量微积分过程的压力稳定质量守恒方程,以克服因流体不可压缩性引发的压力场空间分布虚假振荡现象。采用离散的弹性-粘性应力分裂技术以在缺失纯粘性项情况下保持动量方程弱形式中的椭圆项贡献。利用迎风流线方法离散粘弹性Phan-Thien-Tanner本构方程中的对流项,基于Crank-Nicolson隐式差分格式的迭代稳定分步算法求解质量、动量守恒方程和本构方程。用流函数法追踪和确定移动自由面,对等温低密度聚乙烯和线型低密度聚乙烯熔体的挤出胀大进行数值模拟,数值结果与相关文献和试验结果吻合得较好。 |
| 关 键 词： | 粘弹性流 有限元法 分步算法 挤出胀大 |
Simulation of Polymer Extrusion Swelling by Using Iterative Stabilized Fractional Step Algorithm |
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| WANG Wei,LI Xikui,HAN Xianhong. Simulation of Polymer Extrusion Swelling by Using Iterative Stabilized Fractional Step Algorithm[J]. Chinese Journal of Mechanical Engineering, 2010, 46(2). DOI: 10.3901/JME.2010.02.047 | |
| Authors: | WANG Wei LI Xikui HAN Xianhong |
| Affiliation: | 1. State Key Laboratory of Structural Analysis of Industry Equipment/a>;Dalian University of Technology/a>;Dalian 116023/a>;2. Key Laboratory of Rubber-plastics/a>;Ministry of Education/a>;Qingdao University of Science & Technology/a>;Qingdao 266042/a>;3. Department of Plasticity Forming Engineering/a>;Shanghai JiaoTong University/a>;Shanghai 200030 |
| Abstract: | With the introduction of the finite incremental calculus procedure a pressure stabilized mass conservation equation is reconstructed to overcome spurious oscillations of resulting pressure spatial distribution due to incompressibility of fluids. The discrete elastic viscous stress splitting method is used to retain an elliptic contribution in the weak form of the momentum equation in the absence of a purely viscous contribution or as the viscous contribution is negligible in comparison with the viscoelastic... |
| Keywords: | Viscoelastic flow Finite element method Fractional step algorithm Extrusion swelling |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |