ASTER Shell: a simple concept to significantly increase the plastic buckling strength of short cylinders subjected to combined external pressure and axial compression

Advanced Modeling and Simulation in Engineering Sciences

Table 14 Comparison of the calculated buckling loads of ASTER VM22 and VM-22 shells

Shell name	d/h	r (mm)	\(\frac{\Lambda _{E}}{P_{E}}\)	\(\frac{\Lambda _{NL}}{P_{E}}\)	\(\frac{\Lambda _{NLP}}{P_{E}}\)
External pressure
VM 22	15.47	20	3.35	7.5	4.47
VM -22	15.47	20	4.96	3.5	4.6
VM -22	22.7	30	7.19	5.9	4.15

Shell name	d/h	r (mm)	\(\frac{\Lambda _{E}}{PF_{E}}\)	\(\frac{\Lambda _{NL}}{PF_{E}}\)	\(\frac{\Lambda _{NLP}}{PF_{E}}\)
50 % external pressure 50 % axial compression
VM 22	15.47	20	1.22	1.43	0.97
VM -22	15.47	20	1.25	1.03	0.76
VM -22	22.7	30	2.12	1.53	0.90

Shell name	d/h	r (mm)	\(\frac{\Lambda _{E}}{F_{E}}\)	\(\frac{\Lambda _{NL}}{F_{E}}\)	\(\frac{\Lambda _{NLP}}{F_{E}}\)
Axial compression
VM 22	15.47	20	1.48	1.19	0.92
VM -22	15.47	20	1.13	0.95	0.77
VM -22	22.7	30	1.79	1.48	1.15