Post-buckling analysis of geometrically imperfect nanoparticle reinforced annular sector plates under radial compression

Seyed Sajad Mirjavadi , Masoud Forsat , Saeed Mollaee , Mohammad Reza Barati , Behzad Mohasel Afshari , A.M.S. Hamouda

Abstract

Buckling and post-buckling behaviors of geometrically imperfect annular sector plates made from nanoparticle reinforced composites have been investigated. Two types of nanoparticles are considered including graphene oxide powders (GOPs) and silicone oxide (SiO2). Nanoparticles are considered to have uniform and functionally graded distributions within the matrix and the material properties are derived using Halpin-Tsai procedure. Annular sector plate is formulated based upon thin shell theory considering geometric nonlinearity and imperfectness. After solving the governing equations via Galerkin\'s technique, it is showed that the post-buckling curves of annular sector plates rely on the geometric imperfection, nanoparticle type, amount of nanoparticles, sector inner/outer radius and sector open angle.

Key Words

post-buckling; thin shell theory; nanoparticles; graphene oxide powder; nonlinear stability

Address

Seyed Sajad Mirjavadi — Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
Masoud Forsat — Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
Saeed Mollaee — Auckland Bioengineering Institute, the University of Auckland, Auckland, New Zealand
Mohammad Reza Barati — Fidar Project Qaem Company, Darvazeh Dolat, Tehran, Iran
Behzad Mohasel Afshari — School of Mechanical Engineering, College of Engineering, Sharif University of Technology, Tehran, Iran
A.M.S. Hamouda — Department of Mechanical and Industrial Engineering, Qatar University, P.O. Box 2713, Doha, Qatar

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