TY - JOUR
ID - 4463
TI - The Effect of Different Weighting Ratios, Length, and Thickness on Weighted Sum of the First Natural Frequency and Critical Buckling Load for a Laminated Composite Circular Cylindrical Shell
JO - Mechanics of Advanced Composite Structures
JA - MACS
LA - en
SN - 2423-4826
AU - Ashrafian, Roozbeh
AU - Ghoddosian, Ali
AD - Department of Mechanical Engineering, Semnan University, P.O. Box 35131-191, Semnan, Iran
Y1 - 2021
PY - 2021
VL - 8
IS - 1
SP - 87
EP - 98
KW - Weighted Sum
KW - natural frequency
KW - Buckling load
KW - Laminated Composite
KW - Circular Cylindrical Shell
DO - 10.22075/macs.2020.19113.1229
N2 - In this study, a weighted sum, consisting two non-dimensionalized quantities critical buckling force and natural frequency, is employed to maximize the objective function for a laminated composite circular cylindrical shell. The function is considered to find the optimum solutions as the goal. Orientation angels of fibers are mentioned in a well-known configuration as candidate design, and critical buckling force and natural frequency values are derived with the first order shear deformation theory. The composite shell is considered with 8 layers, also the boundary conditions are assumed to be fully simply support and to satisfy boundary conditions displacement and slope components are defined in form of double Fourier series. After combination of differential operators and Fourier series, eventually the matrix L is found and Galerkin method gains function values. For this purpose, a program based on MATLAB is employed for the process. Validations of numerical results show that the used method is moderately satisfactory and acceptable in predicting the critical buckling force and the natural frequency of the shell in comparison with other works. As the conclusion, the effect of different weighting ratios, shell length-to-radius ratios, and shell thickness-to-radius ratios on the optimal designs are investigated and the results are compared.
UR - https://macs.semnan.ac.ir/article_4463.html
L1 - https://macs.semnan.ac.ir/article_4463_d256a57d03e8cd7c8940569a68c64dab.pdf
ER -