| Autor: |
Jun Koyanagi, Naohiro Takase, Kazuki Mori, Takenobu Sakai |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Composites Part C: Open Access, Vol 2, Iss , Pp 100041- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2666-6820 |
| DOI: |
10.1016/j.jcomc.2020.100041 |
| Popis: |
This paper presents a quantitative method for predicting the experimental value of the tensile strength of a polymer material by using molecular dynamics (MD) simulation. Because the tensile strength obtained by MD simulation is almost always higher than the experimental value, a solution is suggested in the present study. Several simulations varying simulation volumes (i.e., number of molecules) and tensile loading speeds (i.e., strain rate) were implemented; the results confirmed that the tensile strength decreases with increasing simulation volume and decreasing strain rate. Firstly, strength as a function of the simulation volume was determined based on Weibull statistics and then the relationship was extrapolated to a much higher number of molecules, which was equivalent to a real specimen. Secondly, the relationship between the tensile strength and strain rate was determined and it was extrapolated to match the strain rate in actual experiments. Consequently, a predicted strength was close to the experimental result. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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