Multiscale Modeling and Simulation Platform for Materials and Life Sciences
J-OCTA
Multiscale Modeling and Simulation Platform for Materials and Life Sciences
J-OCTA
Rheology Simulation of Rubber [Courtesy of Sumitomo Rubber Industries, Ltd.]
To evaluate dynamic viscoelastic properties (tanδ) related to tire rolling resistance, simulations were performed for crosslinked polyisoprene rubber using the primitive chain network (PCN) model in NAPLES. The effect of the distribution of molecular chain crosslinking positions on tanδ was analyzed, showing that terminal crosslinking is effective in reducing rolling resistance.
Use Cases Highlights
- Analysis of the relationship between tire rolling resistance and rubber molecular crosslink structure
- Simulations useful for material design
Analysis of the relationship between rolling resistance of tires and crosslinked structure of rubber molecules
The distribution of crosslinking positions in the molecular structure of crosslinked polyisoprene rubber is shown. NAPLES is used to evaluate the effect of crosslinking on a polymer with molecular weight of 300,000.
Distribution of cross-link on polymer chain
Simulations useful for material design
The frequency dependence of tanδ for different crosslink structures (case1–case3) is shown. In terminally crosslinked structures, tanδ is lower in the low-frequency region, suggesting a contribution to reducing rolling resistance.
Calculated tanδ in each case
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Materials Simulation and Materials Informatics (Automotive)
Materials development through the integration of simulation and data science (Materials DX)
Materials Simulation and Materials Informatics (Mobility)
Materials development through the integration of simulation and data science (Materials DX)
Materials Simulation and Materials Informatics (Electrical Equipment/Precision Equipment/Semiconductors/Heavy Electrical Equipment)
Materials development through the integration of simulation and data science (Materials DX)
