Elastic Buckling Behaviour of a Four-Lobed Cross Section Cylindrical Shell with Variable Thickness under Non-Uniform Axial Loads

Table 2

The fundamental buckling loads factor 𝑝 for symmetric and antisymmetric modes of an axially loaded cylindrical shell, (𝜁=1,𝑙=4,ℎ=0.02).

	Symmetric & Antisymmetric Modes
	𝜂
	1			2			5
m	A	B	𝜇	A	B	𝜇	A	B	𝜇
1	143.814	267.355	1.8	189.854	457.252	2.4	335.448	894.988	2.6
2	135.864	295.683	2.1	164.134	432.286	2.6	241.186	673.852	2.7
3	130.580	301.418	2.3	151.581	411.782	2.7	204.525	581.959	2.8
4	127.165	404.754	3.1	143.553	396.756	2.7	183.601	527.618	2.8
5	124.319	309.743	2.5	137.783	385.323	2.7	169.798	491.308	2.8
6	122.243	312.076	2.5	133.457	376.613	2.8	159.812	464.874	2.9
7	120.566	315.157	2.6	130.102	369.922	2.8	152.083	444.416	2.9
8	119.173	314.672	2.6	127.390	364.647	2.8	145.726	427.695	2.9
9	117.985	312.156	2.6	125.647	360.347	2.8	140.133	413.152	2.9
10	116.947	293.795	2.5	123.156	356.685	2.8	134.853	399.486	2.9