What the study found
The study found that several hyperelastic models could be used to represent the mechanical behavior of a polyurethane-based thermoplastic elastomer used in belts. It also found that deformation speed, or strain rate, may need to be included in the material model because the stress-strain response changed with strain rate.
Why the authors say this matters
The authors say this matters because the results will be used to further refine a numerical model for optimizing the belt plasticising operation during hot plate welding. They also note that better optimization may improve energy efficiency in belt welding and, more broadly, the belt manufacturing process.
What the researchers tested
The researchers combined static tensile testing with numerical simulation using the finite element method. They first measured the material's stress response to displacement, then used the resulting stress-strain data to test several hyperelastic models, including Mooney-Rivlin, Ogden, Neo-Hooke, Yeoh, Arruda-Boyce, and Marlow.
What worked and what didn't
Based on agreement between numerical and experimental results, the second-order polynomial, third-order Ogden, and fourth-order Ogden models were selected as suitable for this material. The first stage of testing also suggested that a model accounting for deformation speed may be needed, and the second stage showed that strain rate affected the stress-strain characteristics.
What to keep in mind
The abstract does not describe detailed limitations beyond indicating that the model still needs refinement. The findings are specific to the polyurethane-based thermoplastic elastomer studied and to the belt welding context described in the paper.
Key points
- The study examined a polyurethane-based thermoplastic elastomer used in belts.
- Static tensile tests were used to measure stress-strain behavior.
- Several hyperelastic models were compared in finite element simulations.
- The second-order polynomial, third-order Ogden, and fourth-order Ogden models were selected as suitable.
- Strain rate affected the stress-strain characteristics, suggesting a need for viscoelasticity.
Disclosure
- Research title:
- Mechanical models for thermoplastic elastomer belt welding were refined
- Authors:
- Krzysztof Wałęsa, Krzysztof Talaśka, Dominik Wilczyński
- Institutions:
- Poznań University of Technology, Poznań University of Technology, Poznań University of Technology
- Publication date:
- 2026-03-16
- OpenAlex record:
- View
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