Development of a Five-Degree-of-Freedom Seated Human Model and Parametric Studies for Its Vibrational Characteristics

Table 3

Initial and optimized values of the stiffness and damping coefficients.

Parameter	Parameter	Initial value	Optimized value
Stiffness (kN/m, kNm/rad)	k1, k2	80.00	66.60
	k3, k4	100.00	95.54
	kt1	2.00	1.42
	kt2	1.00	1.12
Damping coefficient (kNs/m, kNms/rad)	c1, c2	1.50	0.89
	c3, c4	1.50	0.94
	ct1	0.30	0.30
	ct2	0.20	0.20