Damage modeling of injection-molded short-and long- fiber thermoplastics

Ba Nghiep Nguyen, VIastimil Kunc, Satish K. Bapanapall, Jay H. Phelps, Charles L. Tucker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This article applies the recent anisotropic rotary diffusion - reduced strain closure (ARD- RSC) model for predicting fiber orientation and a new damage model for injection-molded long- fiber thermoplastics (LFTs) to analyze progressive damage leading to total failure of injection- molded long-glass-fiber/polypropylene (PP) specimens. The ARD-RSC model was implemented in a research version of the Autodesk Moldflow Plastics Insight (MPI) processing code, and it has been used to simulate injection-molding of a long-glass-fiber/PP plaque. The damage model combines micromechanical modeling with a continuum damage mechanics description to predict the nonlinear behavior due to plasticity coupled with damage in LFTs. This model has been implemented in the ABAQUS finite element code via user-subroutines and has been used in the damage analyses of tensile specimens removed from the injection-molded long-glass- fiber/PP plaques. Experimental characterization and mechanical testing were performed to provide input data to support and validate both process modeling and damage analyses. The predictions are in agreement with the experimental results.

Original languageEnglish (US)
Title of host publication9th Annual Automotive Composites Conference and Exhibition, ACCE 2009
Pages694-708
Number of pages15
StatePublished - 2009
Event9th Annual Automotive Composites Conference and Exhibition, ACCE 2009 - Troy, MI, United States
Duration: Sep 15 2009Sep 16 2009

Publication series

Name9th Annual Automotive Composites Conference and Exhibition, ACCE 2009

Other

Other9th Annual Automotive Composites Conference and Exhibition, ACCE 2009
Country/TerritoryUnited States
CityTroy, MI
Period9/15/099/16/09

ASJC Scopus subject areas

  • Automotive Engineering

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