Design Analysis and Optimization of Coil Spring for Three-Wheeler Vehicles Using Composite Materials

Table 8

Comparison of deflection of the modified composite coil spring with steel spring model.

Load (N)	Deflection of the spring (mm)
	Steel spring		Carbon/epoxy spring		Carbon/CNT/epoxy spring
	Analytical	FEA	Analytical	FEA	Analytical	FEA
360	3.039	3.249	2.924	3.72	2.821	2.9839
720	6.077	6.499	5.848	7.44	5.643	5.9678
1080	9.116	9.748	8.773	11.16	8.464	8.9518
1440	12.154	12.997	11.697	14.88	11.286	11.936
1810	15.277	16.336	14.702	18.703	14.186	15.003
2160	18.232	19.495	17.545	22.32	16.929	17.904
2520	21.270	22.745	20.470	26.04	19.750	20.887
2880	24.309	25.994	23.394	29.76	22.572	23.871
3240	27.347	29.234	26.318	33.48	25.393	26.855
3600	30.386	32.492	29.242	37.2	28.215	29.839