Viscoelastic response of impact process on dense suspensions
نویسندگان
چکیده
We numerically study impact processes on dense suspensions using the lattice Boltzmann method to elucidate connection between elastic rebound of an impactor and relations among speed u0, maximum force acting Fmax, elapsed time tmax reach Fmax. find that emerges in early stage impact, while process takes place late stage. a crossover Fmax from u0 independent regime for low power law satisfying Fmax∝u0α with α≈1.5 high u0. Similarly, satisfies tmax∝u0β β≈−0.5 Both power-law vs are system size, but phenomenon strongly depends depth container suspensions. Thus, we indicate is not directly related tmax. propose floating + chain model, where caused by term proportional number connected chains bottom plate. On other hand, there no contributions against because absence percolated This phenomenology predicts Fmax∝u03/2 tmax∝u0−1/2 also recovers behavior quantitatively even if process.
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2021
ISSN: ['1527-2435', '1089-7666', '1070-6631']
DOI: https://doi.org/10.1063/5.0061196