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Table 1 Model parameters

From: Fractional-order modelling of state-dependent non-associated behaviour of soil without using state variable and plastic potential

Soil type κ (10−3) ν \(M_{c}\) λ \(e_{\varGamma } \) α \(h_{1}\) \(h_{2}\)
Ottawa sand [50] 5.0 0.25 1.19 0.017 0.864 0.75 0.95 0.35
Sacramento River sand [51] 5.0 0.25 1.40 0.031 1.054 1.10 15 12.7
Tacheng rockfill [12] 1.28 0.25 1.64 0.0568 \(0.53+0.59e_{0}\) 1.05 15 1.0