Commercial Vehicle Ride Comfort Optimization Based on Intelligent Algorithms and Nonlinear Damping

Table 2

Bounds of design variables.

Variables	Original	Lower	Upper
kfs (N/m)	410000	369000	451000
krs (N/m)	1476000	1328400	1623600
cf1	36.54	32.886	40.194
cf2	1.487	1.338	1.636
cf3	0.5996	0.540	0.660
cr1	49.66	44.694	54.626
cr2	1.487	1.338	1.636
cr3	0.5996	0.540	0.660