Experimental and simulation studies on the mold replicability in the thermoforming process
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Navid Namdari
Abstract
In the precision thermoforming process, one of the main drawbacks occurs in the profile deviation of the produced part. In this study, the effect of different thermoforming process parameters on the mold replicability of a high impact polystyrene container produced by vacuum forming and drape forming processes has been experimentally and numerically investigated. According to experimental results, in the drape forming process, when the initial sheet thickness increases, the part will have higher mold replicability, whereas in the vacuum forming process, by increasing the initial sheet thickness, the mold replicability increases and reaches its peak, then decreases. The results also indicate that both temperature and vacuum pressure exhibit the most significant effect on mold replicability of the part. Furthermore, the finite element method is utilized by the implementation of a fully thermomechanically coupled hyperviscoelastic constitutive model in ABAQUS 6.13. By using this material model, it is possible to compare the sensitivity of the output (mold replicability of the part) to the changes in the range of the process parameters. The simulation results verified by the experimental data and the hyperviscoelastic model showed to be an outstanding and stable platform for the process simulation.
Acknowledgments
The authors would like to thank Dr. Abbas Ghaei, Mr. Hamed Barghikar, Mr. Mohammad Ghobadnam, and Mr. Masood Rezaei Rejani for their technical help during the completion of this project.
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Articles in the same Issue
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- Preparation of graphene-based compounds with improved dispersion by a two-stage production process
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- Implementation of partial slip boundary conditions in an open-source finite-volume-based computational library
- Ultrasonic measurement of clamping force for injection molding machine
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Articles in the same Issue
- Frontmatter
- Material properties
- Chemical and biological effects of low pressure N2-O2 plasma setup on polymeric materials
- Effect of aging conditions on the mechanical properties and antimicrobial activity of elastomer nanocomposites
- Creep and dynamic mechanical behavior of cross-linked polyvinyl alcohol reinforced with cotton fiber laminate composites
- Preparation and assembly
- Foam rubber from centrifuged and creamed latex
- Preparation and properties of multi-walled carbon nanotubes and eggshell dual-modified polycaprolactone composite scaffold
- Effectiveness of a coagulation step and polyester support on blend polyvinylchloride membrane formation and performance
- Novel proton exchange membranes based on PVC for microbial fuel cells (MFCs)
- Preparation of graphene-based compounds with improved dispersion by a two-stage production process
- Engineering and processing
- Implementation of partial slip boundary conditions in an open-source finite-volume-based computational library
- Ultrasonic measurement of clamping force for injection molding machine
- Experimental and simulation studies on the mold replicability in the thermoforming process
