Table 1 Impact damping factor models
Model | Factor \(\mu\) | Model | Factor \(\mu\) |
|---|---|---|---|
Hunt and Crossley | \(\frac{{3\left( {1 - \varepsilon } \right)}}{2}\frac{{k_{m} }}{{\dot{\delta }^{\left( - \right)} }}\) | Flores et al. | \(\frac{{8\left( {1 - \varepsilon } \right)}}{5\varepsilon }\frac{{k_{m} }}{{\dot{\delta }^{\left( - \right)} }}\) |
Lankarani and Nikravesh | \(\frac{{3\left( {1 - \varepsilon^{2} } \right)}}{4}\frac{{k_{m} }}{{\dot{\delta }^{\left( - \right)} }}\) | Shiwu Hu and Xinglin Guo | \(\frac{{3\left( {1 - \varepsilon } \right)}}{2\varepsilon }\frac{{k_{m} }}{{\dot{\delta }^{\left( - \right)} }}\) |