Journal of Materials Science: Materials in Engineering

Table 2 Buckling loads for different lay-up sequences with and without imperfection

From: The effect of different geometrical imperfection of buckling of composite cylindrical shells subjected to axial loading

Lay-up sequence	P _cr(kN)
Lay-up sequence	Without imperfection	With imperfection
(45,−45,45,−45)_S	102.563	68.834
(90₂,45,−45)_S	179.235	119.490
(0₂,45,−45)_S	128.620	85.746
(0₂,30,−30)_S	127.135	84.195
(0₂,60,−60)_S	144.294	96.841
(45₄,−45₄)	70.537	58.779
(0,45,−45,0)_S	166.401	110.087
(90,0)_2S	122.655	83.438

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