An Analytical Approach to the Analysis of Inhomogeneous Pipes under External Pressure

Table 1

Collapse pressures [MPa] for homogeneous rings (H) and lower bound pressures [MPa] for inhomogeneous rings (I) (𝐷=457.2 mm, 𝜔=1/1000, 𝑛=3, and 𝜃_𝑐=𝜋/4).

𝑡=20 mm				𝑡=26 mm				𝑡=32 mm
H		I		H		I		H		I
Theory	FEM	Theory	FEM	Theory	FEM	Theory	FEM	Theory	FEM	Theory	FEM
35.27	34.59	27.88	28.07	51.20	50.83	42.83	42.34	68.44	68.43	58.56	57.60