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【答案】应助回帖
★ ★ ★ ★ ★
感谢参与，应助指数 +1
wdavid1: 金币+5, ★★★很有帮助, 非常感谢！ 2016-05-16 08:50:45
心静_依然: LS-EPI+1, 感谢应助 2016-05-16 10:53:58
Time-dependent rheological behavior of branched polymer melts in extensional flows
作者:Wang, W (Wang, Wei)[ 1,2 ] ; Hu, CX (Hu, Changxu)[ 1 ] ; Li, WW (Li, Wenwen)[ 1 ]
MECHANICS OF TIME-DEPENDENT MATERIALS
卷: 20
期: 1
页: 123-137
DOI: 10.1007/s11043-015-9287-3
出版年: FEB 2016
查看期刊信息
MECHANICS OF TIME-DEPENDENT MATERIALS
出版商 SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN: 1385-2000
eISSN: 1573-2738
研究领域 Mechanics
Materials Science
摘要
The viscoelastic flow of low-density polyethylene melts in a cross-slot channel is studied numerically for the double convected Pom-Pom (DCPP) and single modified DCPP (S-MDCPP) models. The equal low-order finite elements for velocity-pressure-stress variables are implemented to solve the flow fields using the pressure-stabilized iterative fractional step algorithm. The distributions of axial velocity along the channel centerline and the principal stress difference achieved by numerical predictions are in quantitative good agreement with the reported experimental results. Furthermore, the evolution of backbone stretch of macromolecule with flow time is demonstrated, and then an exponential decay function is proposed linking the microscale stretch relaxation time with the macroscale flow time, in order to reveal the stretch relaxation response of the branched polymer. The effects of the Weissenberg number and several constitutive parameters of the S-MDCPP model on the rheological behavior of polymer melts are discussed.
关键词
作者关键词:Numerical simulation; Complex flow; Rheological behavior; Extensional flow; Viscoelastic constitutive models; Polymer melts
KeyWords Plus:CROSS-SLOT FLOW; PLANAR CONTRACTION FLOW; POM-POM MODEL; FINITE-ELEMENT-METHOD; CONSTITUTIVE MODELS; NUMERICAL SIMULATIONS; POLYETHYLENE MELT; EQUATIONS; RHEOMETRY; FLUIDS
作者信息
通讯作者地址: Wang, W (通讯作者) Qingdao Univ Sci & Technol, Minist Educ, Shandong Prov Key Lab Rubber Plast, Key Lab Rubber Plast, Qingdao 266042, Peoples R China.
增强组织信息的名称
Qingdao University of Science & Technology
通讯作者地址: Wang, W (通讯作者) Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China.
增强组织信息的名称
Dalian University of Technology
地址: [ 1 ] Qingdao Univ Sci & Technol, Minist Educ, Shandong Prov Key Lab Rubber Plast, Key Lab Rubber Plast, Qingdao 266042, Peoples R China
增强组织信息的名称
Qingdao University of Science & Technology
[ 2 ] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
增强组织信息的名称
Dalian University of Technology
电子邮件地址:ww@qust.edu.cn
基金资助致谢
基金资助机构 授权号
National Natural Science Foundation of China 21274072
11302043
State Key Laboratory of Structural Analysis for Industrial Equipment GZ1213
Key Laboratory of Rubber-plastics, Ministry of Education KF2010007
查看基金资助信息关闭基金资助信息
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China through Contract/Grant numbers 21274072, 11302043, and the State Key Laboratory of Structural Analysis for Industrial Equipment (No. GZ1213) and the Key Laboratory of Rubber-plastics, Ministry of Education (No. KF2010007).
出版商
SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
类别 / 分类
研究方向:Mechanics; Materials Science
Web of Science 类别:Mechanics; Materials Science, Characterization & Testing
文献信息
文献类型:Article
语种:English
入藏号: WOS:000371303800007
ISSN: 1385-2000
eISSN: 1573-2738
期刊信息
目录： Current Contents Connect®
其他信息
IDS 号: DF4FQ
Web of Science 核心合集中的 "引用的参考文献": 38
Web of Science 核心合集中的 "被引频次": 0
影响因子 1.587 1.418
2014 5 年
JCR® 类别 类别中的排序 JCR 分区
MATERIALS SCIENCE, CHARACTERIZATION & TESTING 5/33 Q1
MECHANICS 50/137 Q2
数据来自第 2014 版 Journal Citation Reports® |
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