DAMAGE MODELING OF INJECTION-MOLDED SHORT- AND LONG-FIBER THERMOPLASTICS
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.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1011820
- Report Number(s):
- PNNL-SA-67094; VT0505000; TRN: US1102207
- Resource Relation:
- Conference: The 9th Annual SPE Automotive Composites Conference & Exhibition, September 15-16, 2009, Troy, MI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CLOSURES
DIFFUSION
FIBERS
ORIENTATION
PLASTICITY
PLASTICS
PROCESSING
SIMULATION
SOLAR PROTONS
STRAINS
TESTING
THERMOPLASTICS
Injection-Molding
Short-Fiber Thermoplastics
Long-Fiber Thermoplastics
Damage Modeling
Process Modeling
Fiber Orientation
Fiber Length Distribution
Finite Element Analysis