Nonlinear Post-Buckling Stability of Graphene Origami-Enabled Auxetic Metamaterials Plates  

作　　者：Salwa A.Mohamed Mohamed A.Eltaher Nazira Mohamed Rasha Abo-bakr 

机构地区：[1]Engineering Mathematics Department,Faculty of Engineering,Zagazig University,Zagazig,44519,Egypt [2]Mechanical Engineering Department,Faculty of Engineering,King Abdulaziz University,Jeddah,21589,Saudi Arabia [3]Mechanical Design and Production Department,Faculty of Engineering,Zagazig University,Zagazig,44519,Egypt [4]Mathematical Department,Faculty of Science,Zagazig University,Zagazig,44519,Egypt

出　　处：《Computer Modeling in Engineering & Sciences》2025年第4期515-538,共24页工程与科学中的计算机建模(英文)

摘　　要：The nonlinear post-buckling response of functionally graded(FG)copper matrix plates enforced by graphene origami auxetic metamaterials(GOAMs)is investigated in the currentwork.The auxeticmaterial properties of the plate are controlled by graphene content and the degree of origami folding,which are graded across the thickness of the plate.Thematerial properties of the GOAM plate are evaluated using genetic micro-mechanicalmodels.Governing nonlinear eigenvalue problems for the post-buckling response of the GOAM composite plate are derived using the virtual work principle and a four-variable nonlinear shear deformation theory.A novel differential quadrature method(DQM)algorithm is developed to solve the nonlinear eigenvalue problem.Detailed parametric studies are presented to explore the effects of graphene content,folding degree,and GO distribution patterns on the post-buckling responses of GOAM plates.Results show that high tunability in post-buckling characteristics can be achieved by using GOAM.FunctionallyGradedGraphene OrigamiAuxeticMetamaterials(FG-GOAM)plates can be used in aerospace structures to improve their structural performance and response.

关 键 词：POSTBUCKLING nonlinear stability auxetic metamaterials higher order plate DQM numerical solution 

分 类 号：O343.9[理学—固体力学]