Processing-induced inhomogeneity of yield stress in polycarbonate product and its influence on the impact behavior

Yingjie Xu; Huan Lu; Tenglong Gao; Weihong Zhang

doi:10.3390/polym8030072

Processing-induced inhomogeneity of yield stress in polycarbonate product and its influence on the impact behavior

Yingjie Xu, Huan Lu, Tenglong Gao, Weihong Zhang

School of Mechanical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements.

Original language	English
Article number	72
Journal	Polymers
Volume	8
Issue number	3
DOIs	https://doi.org/10.3390/polym8030072
State	Published - 1 Mar 2016

Keywords

Finite element simulation
Inhomogeneity
Injection molding process
Izod impact
Polycarbonate
Yield stress

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10.3390/polym8030072

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title = "Processing-induced inhomogeneity of yield stress in polycarbonate product and its influence on the impact behavior",

abstract = "In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements.",

keywords = "Finite element simulation, Inhomogeneity, Injection molding process, Izod impact, Polycarbonate, Yield stress",

author = "Yingjie Xu and Huan Lu and Tenglong Gao and Weihong Zhang",

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doi = "10.3390/polym8030072",

language = "英语",

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AU - Xu, Yingjie

AU - Lu, Huan

AU - Gao, Tenglong

AU - Zhang, Weihong

PY - 2016/3/1

Y1 - 2016/3/1

N2 - In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements.

AB - In this study, an integrated methodology for impact analysis of polycarbonate (PC) product is proposed which incorporates the processing-induced inhomogeneity of yield stress. A previously developed model is extended to predict the inhomogeneous yield stress distribution along the specimen by using the thermal history experienced during injection molding. A strain rate-dependent elastic-plastic model combining the processing-induced yield stress is applied to model the mechanical behavior of PC. Finite element simulation for notched Izod impact test is then conducted to analyze the impact behaviors of PC specimens with different thermal histories. Numerical results of the fracture energies are compared with experimental measurements.

KW - Finite element simulation

KW - Inhomogeneity

KW - Injection molding process

KW - Izod impact

KW - Polycarbonate

KW - Yield stress

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DO - 10.3390/polym8030072

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SN - 2073-4360

VL - 8

JO - Polymers

JF - Polymers

IS - 3

M1 - 72

ER -

Processing-induced inhomogeneity of yield stress in polycarbonate product and its influence on the impact behavior

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Keywords

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