Efficient Analytical Model for Long-Term Performance of Laminated Tube with Viscoelastic Interlayer by Quasi-Elastic Approximation

Table 2

Values of the stresses and displacements for different numbers of terms.

t	N	(MPa)	(MPa)	(MPa)	(mm)	(mm)
1 day	2	−310.39	1.0706	−6.3890	−17.544	−37.775
	4	−331.05	0.94732	−6.3890	−17.544	−38.255
	6	−332.05	0.91449	−6.3702	−17.543	−38.264
	8	−333.08	0.90963	−6.3702	−17.543	−38.264
	10	−333.09	0.90906	−6.3702	−17.543	−38.264
1 year	2	−424.95	0.34484	−3.2129	−22.299	−48.274
	4	−445.03	0.20970	−3.2129	−22.299	−48.716
	6	−446.12	0.19083	−3.2069	−22.299	−48.727
	8	−446.17	0.18923	−3.2069	−22.299	−48.727
	10	−446.17	0.18910	−3.2069	−22.299	−48.727
10 years	2	−492.78	−0.29633	−1.1232	−24.895	−54.048
	4	−505.39	−0.38511	−1.1232	−24.895	−54.322
	6	−505.65	−0.38970	−1.1222	−24.895	−54.325
	8	−505.66	−0.38991	−1.1222	−24.895	−54.325
	10	−505.66	−0.38992	−1.1222	−24.895	−54.325

Note. The values of , , are given at  = 0.5, r = 900 mm, and the values of , are given at  = 0.25, r = 900 mm.