Analysis and Optimisation of Ride Vibration of a Heavy-Duty Truck Based on a Vertical-Pitch-Roll Driver-Vehicle Coupled Dynamic Model

Table 2

Optimal results of design variables.

Design variable	Unit	Baseline	Optimisation
Stiffness of front suspension	N/m	595390	476312
Stiffness of rear suspension	N/m	1552190	1241752
Damping of front suspension	Ns/m	61290	49032
Damping of rear suspension	Ns/m	5000	6000
Stiffness of front mount of cab	N/m	11870	9496
Stiffness of rear mount of cab	N/m	11870	9496
Damping of front mount of cab	Ns/m	5290	4232
Damping of rear mount of cab	Ns/m	5290	4232
Stiffness of seat suspension	N/m	20000	16000
Damping of seat suspension	Ns/m	200	215
Stiffness of front mount of carriage	N/m	4830700	5796840
Stiffness of front middle mount of carriage	N/m	4830700	5796840
Stiffness of rear middle mount of carriage	N/m	4830700	5796840
Stiffness of rear mount of carriage	N/m	4830700	5796840
Distance between middle mount and carriage CG	m	1.0	1.5