The influences of various types of auxetic structures on the stability of sandwich toroidal shell segments
Publish place: The 32nd annual international conference of the Iranian Society of Mechanical Engineers
Publish Year: 1403
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME32_235
تاریخ نمایه سازی: 15 تیر 1403
Abstract:
In this study, stability analysis of sandwich toroidal shell segments (TSSs) with carbon nanotube reinforced composite (CNTRC) face sheets featuring various types of auxetic cores, surrounded by elastic foundations under radial pressure is presented. Two different types of auxetic structures are considered for the core, including re-entrant auxetic structure and graphene origami-enabled auxetic structure. The nonlinear stability equilibrium equations of the longitudinally shallow shells are formulated using the von Kármán shell theory, in conjunction with Stein and McElman approximation while considering Winkler–Pasternak's elastic foundation to simulate the interaction between the shell and elastic foundation. The Galerkin method is employed to derive the nonlinear stability responses of the shells. The numerical investigations show the influences of various types of auxetic-core layers, CNT-reinforced face sheets, as well as elastic foundation on the stability of sandwich TSSs.
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Authors
Mohammadhossein Goudarzfallahi
Mechanical Engineering Department, Science and Research branch, Islamic Azad University, Tehran, Iran
Farzad Ebrahimi
Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
Ali Alinia Ziazi
Mechanical Engineering Department, Science and Research branch, Islamic Azad University, Tehran, Iran