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
BAAIJENS, FPT
[J]. 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
CHIANG, HH
HIEBER, CA
WANG, KK
[J]. POLYMER ENGINEERING AND SCIENCE, 1991, 31 (02) : 116 - 124
[7] TRANSIENT AND RESIDUAL THERMOVISCOELASTIC STRESSES IN GLASS
CROCHET, MJ
DENAYER, A
[J]. 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
DESTRUEL, P
AI, B
GIAM, HT
[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1983, 21 (06) : 851 - 858

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