Enhancing Vibration Reduction on Lightweight Lower Control Arm

Table 4

Experimental results of baseline and hybrid LCA: the comparison takes into account the frequency and the damping ratio for each extracted mode.

Eigenmode	Baseline exp. frequency (Hz)	Hybrid exp. frequency (Hz)	Damping ratio baseline (%)	Damping ratio hybrid (%)
1	245.43	274.14	0.36	1.28
2	275.69	286.18	0.42	1.23
3	396.78	424.21	0.33	1.29
4	654.62	683.48	0.4	1.5
5	780.18	763.26	3.25	3.39
6	855.55	984.45	2.25	2.76
7	988.09	—	0.82	—