Version 1
: Received: 8 August 2024 / Approved: 9 August 2024 / Online: 12 August 2024 (03:39:29 CEST)
How to cite:
Kasprzak, A. Tensile Yield Strength Prediction for Polypropylene Using Cowper-Symonds Model in the Low Range of Strain Rates. Preprints2024, 2024080688. https://doi.org/10.20944/preprints202408.0688.v1
Kasprzak, A. Tensile Yield Strength Prediction for Polypropylene Using Cowper-Symonds Model in the Low Range of Strain Rates. Preprints 2024, 2024080688. https://doi.org/10.20944/preprints202408.0688.v1
Kasprzak, A. Tensile Yield Strength Prediction for Polypropylene Using Cowper-Symonds Model in the Low Range of Strain Rates. Preprints2024, 2024080688. https://doi.org/10.20944/preprints202408.0688.v1
APA Style
Kasprzak, A. (2024). Tensile Yield Strength Prediction for Polypropylene Using Cowper-Symonds Model in the Low Range of Strain Rates. Preprints. https://doi.org/10.20944/preprints202408.0688.v1
Chicago/Turabian Style
Kasprzak, A. 2024 "Tensile Yield Strength Prediction for Polypropylene Using Cowper-Symonds Model in the Low Range of Strain Rates" Preprints. https://doi.org/10.20944/preprints202408.0688.v1
Abstract
This study investigates by hybrid approach of classical calculations and numerical explicit FEM simulation the strain rate sensitive hardening of Polypropylene Sabic 83MF10 under dynamic tension loads. The Cowper-Symonds model is employed to characterize the non-linear increase in yield strength with strain rate, within the range of 0,01 to 1 [1⁄s]. For lower strain rates, a drastic decrease in yield strength is observed, suggesting the significant influence of creep and relaxation phenomena. The study proposes further research incorporating viscoelastic properties for a more comprehensive material model. Additionally, the study observes a disproportionate increase in yield strength for samples with smaller radius, indicating a dependency on triaxiality which suggests further research on the Drucker-Prager model for this material. The study concludes by recommending a broader range of input parameters for future studies, including the Johnson-Cook model and comparison of tensile test results with compression test results.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
