caa a22 4500 445812613 CHVBK 20180317145216.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00419-011-0507-2 doi (NATIONALLICENCE)springer-10.1007/s00419-011-0507-2 A genetic algorithm optimization of ring-stiffened cylindrical shells for axial and radial buckling loads [Elektronische Daten] [M. Bagheri, A. Jafari, M. Sadeghifar] In this research, the general axial and radial buckling optimization of ring-stiffened cylindrical shells is implemented by the genetic algorithm (GA). The stiffened shell is subjected to four constraints including the fundamental frequency, the structural weight, the axial buckling load, and the radial buckling load. In addition, six design variables including shell thickness, number of stiffeners, stiffeners width and height, stiffeners eccentricity distribution order, and stiffeners spacing distribution order are considered. In analytical solution, the Ritz method is applied and stiffeners are treated as discrete elements. The effect of the weighting coefficients of the objective functions on the optimum solution is studied. The results show that optimized stiffening a cylindrical shell leads to a lower structural weight, higher natural frequencies, and larger axial and radial buckling loads, simultaneously. In addition, the upper and lower bounds of the design variables influence the optimum results considerably. It is also found that the distributions of eccentricity and spacing of the stiffeners influence the magnitudes of the axial and radial buckling loads considerably. Springer-Verlag, 2011 Cylindrical shells nationallicence Ring stiffeners nationallicence Buckling loads nationallicence Two-objective optimization nationallicence Genetic algorithm nationallicence Bagheri M. Department of Aerospace Engineering, Shahid Sattari Air University, Tehran, Iran aut Jafari A. Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran aut Sadeghifar M. Department of Mechanical Engineering, Nowshahr Branch, Islamic Azad University, Nowshahr, Iran aut Archive of Applied Mechanics Springer-Verlag 81/11(2011-11-01), 1639-1649 0939-1533 81:11<1639 2011 81 419 https://doi.org/10.1007/s00419-011-0507-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00419-011-0507-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bagheri M. Department of Aerospace Engineering, Shahid Sattari Air University, Tehran, Iran aut NATIONALLICENCE 700 1- Jafari A. Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran aut NATIONALLICENCE 700 1- Sadeghifar M. Department of Mechanical Engineering, Nowshahr Branch, Islamic Azad University, Nowshahr, Iran aut NATIONALLICENCE 773 0- Archive of Applied Mechanics Springer-Verlag 81/11(2011-11-01), 1639-1649 0939-1533 81:11<1639 2011 81 419 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer