ELASTIC CALCULATION OF RESIDUAL-STRESS IN INJECTION-MOLDING - INFLUENCE OF MOLD DEFORMATION AND PRESSURE IN THE LIQUID

被引：27

作者：

BOITOUT, F ^{[1
]}

AGASSANT, JF ^{[1
]}

VINCENT, M ^{[1
]}

机构：

[1] ECOLE MINES PARIS,CTR MISE FORME MAT,F-06904 SOPHIA ANTIPOLIS,FRANCE

来源：

INTERNATIONAL POLYMER PROCESSING | 1995年 / 10卷 / 03期

关键词：

D O I：

10.3139/217.950237

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A calculation of residual stresses in injection molding using a 2-D description of the geometry is presented. The polymer follows an elastic behavior law. The thermal shrinkage and the frozen-in pressure when a layer solidifies are taken into account. A calculation of the pressure in the liquid nr ens after the gate is frozen is presented. A simplified mold deformation model is introduced and its influence on residual stresses is shown. Results are presented for a polystyrene injected in a square plaque.

引用

页码：237 / 242

页数：6

共 27 条

[1]

AUSTIN C, 1989, SPE35 ANTEC TECH PAP, P619

[2] CALCULATION OF RESIDUAL-STRESSES IN INJECTION MOLDED PRODUCTS [J].

BAAIJENS, FPT .

RHEOLOGICA ACTA, 1991, 30 (03) :284-299

[3]

BAAIJENS FTP, 1990, CALCULATION FLOW IND

[4]

BRUCATO VMB, 1989, MATER ENG, V1, P597

[5]

CHEN SC, 1992, SPE38 ANTEC TECH PAP, P2590

[6] A UNIFIED SIMULATION OF THE FILLING AND POSTFILLING STAGES IN INJECTION-MOLDING .1. FORMULATION [J].

CHIANG, HH ;

HIEBER, CA ;

WANG, KK .

POLYMER ENGINEERING AND SCIENCE, 1991, 31 (02) :116-124

[7] TRANSIENT AND RESIDUAL THERMOVISCOELASTIC STRESSES IN GLASS [J].

CROCHET, MJ ;

DENAYER, A .

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1980, 47 (02) :254-260

[8]

DAVIDOFF A, 1992, SPE38 ANTEC TECH PAP, P1882

[9]

DENIZART O, 1990, THESIS ECOLE NATIONA

[10] DENSIFICATION EFFECT ON PHYSICAL-PROPERTIES OF ATACTIC POLYSTYRENE [J].

DESTRUEL, P ;

AI, B ;

GIAM, HT .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1983, 21 (06) :851-858

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