Table 4 Noise variables for the
optimization problem with mean
target values
No Variable type Noise factors Units Mean target
1 NV Rolling friction coefficient (Crr) – 0.01196
2 NV Material parameter: strength coefficient (K) MPa 956.65
3 NV Material parameter: hardening coefficient (n) – 0.171
4 NV Thickness of material (t) mm 2.0