Mechanical Behavior of Helical Spring Made of Composite with and without Material Property Grading under Stable Load

Table 8

Geometrical dimensions of the circular cross section for computational model 3.

Lamina coiled	Circular cross section (Figure 8)	Circular cross-sectional diameter (mm)	Total length of carbon fiber lamina (cm)
1	a	3.84	29.5
2	b	4.28
3	c	4.72
4	d	5.16
5	e	5.60
6	f	6.04
7	g	6.48
8	h	6.92
9	i	7.36
10	j	7.80
11	k	8.24
12	l	8.68
13	m	9.12
14	n	9.56