THERMOVISCOELASTIC CALCULATION OF RESIDUAL-STRESSES AND RESIDUAL SHAPES OF INJECTION MOLDED PARTS

被引：44

作者：

KABANEMI, KK ^{[1
]}

CROCHET, MJ ^{[1
]}

机构：

[1] CATHOLIC UNIV LOUVAIN,UNITE MECAN APPL,PL LEVANT 2,B-1348 LOUVAIN,BELGIUM

来源：

INTERNATIONAL POLYMER PROCESSING | 1992年 / 7卷 / 01期

关键词：

D O I：

10.3139/217.920060

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The present paper describes a three-dimensional finite element method for calculating thermoviscoelastic stresses generated during cooling of injection molded parts. The initial temperature field corresponds to the end of the filling stage. The fully time-dependent algorithm is based on the calculation of the elastic response at every time step. The time-temperature equivalence is assumed for the non-isothermal behavior. At the end of the calculation, one obtains the residual stresses and the shape of molded parts at room temperature. The method is illustrated by means of four examples.

引用

页码：60 / 70

页数：11

共 19 条

[11]

LEE EH, 1963, J APPL MECH, V30, P127, DOI DOI 10.1115/1.3630057

[12]

Mercier J., 1969, RHEOL ACTA, V8, P510

[13] VISCOELASTIC BEHAVIOR OF POLYCARBONATE OF BISPHENOL A [J].

MERCIER, JP ;

AKLONIS, JJ ;

LITT, M ;

TOBOLSKY, AV .

JOURNAL OF APPLIED POLYMER SCIENCE, 1965, 9 (02) :447-&

[14]

Muki R., 1961, J APPL MECH, V28, P193, DOI 10.1115/1.3641651

[15] MODEL OF STRUCTURAL RELAXATION IN GLASS [J].

NARAYANASWAMY, OS .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1971, 54 (10) :491-+

[16] FINITE-ELEMENT CALCULATION OF STRESSES IN GLASS PARTS UNDERGOING VISCOUS RELAXATION [J].

SOULES, TF ;

BUSBEY, RF ;

REKHSON, SM ;

MARKOVSKY, A ;

BURKE, MA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1987, 70 (02) :90-95

[17] ORIENTATION EFFECTS AND COOLING STRESSES IN AMORPHOUS POLYMERS [J].

STRUIK, LCE .

POLYMER ENGINEERING AND SCIENCE, 1978, 18 (10) :799-811

[18]

TROTIGNON JP, 1982, PRECIS MATIERES PLAS

[19]

Zienkiewicz O. C., 1977, FINITE ELEMENT METHO

← 1 2 →