VISCOELASTIC MATERIAL CHARACTERIZATION AND MODELING FOR POLYETHYLENE

被引：85

作者：

POPELAR, CF ^{[1
]}

POPELAR, CH ^{[1
]}

KENNER, VH ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT ENGN MECH,COLUMBUS,OH 43210

来源：

POLYMER ENGINEERING AND SCIENCE | 1990年 / 30卷 / 10期

关键词：

D O I：

10.1002/pen.760301004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An extensive set of stress relaxation and constant strain rate tests for characterizing the mechanical responses of a medium density polyethylene and a high density polyethylene that are commonly used in natural gas distribution piping is described and analyzed. The development of coherent master curves for the relaxation modulus, maximum stress, and the time‐to‐failure for pressurized pipes through a combination of both horizontal and vertical shifting is presented. The relaxation data are used to develop a nonlinear Viscoelastic material model. The model is assessed by making comparisons of the predicted stress‐strain response with the measured response in the constant strain rate tests. Copyright © 1990 Society of Plastics Engineers

引用

页码：577 / 586

页数：10

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