Buckling and vibration of porous sigmoid functionally graded conical shells
Bin Ma 1
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School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, China
Submission date: 2023-02-19
Final revision date: 2023-05-26
Acceptance date: 2023-05-31
Online publication date: 2023-06-27
Publication date: 2023-07-31
Corresponding author
Bin Ma   

School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, 541004, Guilin, China
Journal of Theoretical and Applied Mechanics 2023;61(3):559-571
In this study, the buckling and vibration of a sigmoid functionally graded material (S-FGM) shells are investigated. Two types of porosity distributions, even and uneven, are taken into account. The material properties are estimated by a new modified rule of mixture. In the framework of the classic thin shell theory, the governing equations are derived and Galerkin’s integrate technique is employed to compute the critical load and natural frequency of porous S-FGM shells. The influence of pores, ceramic mass fraction and materials power index are discussed in detail.
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