Table 4 Numerical parameters for simulation in a rotating drum for each contact approach
From: Unified primal-dual active set method for dynamic frictional contact problems
Numerical parameter DEM | Numerical parameter NSCD | Other |
|---|---|---|
\(e_{n} = 0.59\) | \(e_{n} = 0.46\) | T = 5 s |
\(k_{n} = 10^{3} \text{ N}\cdot\text{m}^{-1}\) | \(e_{t} = 1\) | – |
\(k_{t} = \frac{2}{7} k_{n} \text{ N}\cdot\text{m}^{-1}\) | \(\gamma_{n} = 10^{-8}\) | μ = 0.2 |
\(\eta_{ratio} = 0.5\) | \(\gamma_{t} = 10^{-8}\) | – |
- | \(\epsilon_{NLGS} = 10^{-8}\) | – |
dt ≈ 3.8.10−6 s | dt = 1.10−5 s | – |