Effect of Folding Process on the More Accurate Vibrational Characteristics of G-ori Composite Shell

A new nano reinforced shell structure is analyzed in this paper based on higher order shear deformation theory. The Shell is assumed composed of copper matrix enriched with graphene origami.

Using computation of strain energy, kinetic energy and external work through Hamilton’s principle, the motion equations are derived and the parametric analysis is performed to capture influence of material characteristics and multi-field loading using the trigonometric functions on the vibrational characteristics of reinforced cylindrical shell. A new nano reinforced structure is created by insertion of graphene origami into a copper matrix. A thermomechanical loading is accounted for better and accurate modeling the composite reinforced structure. To constitute the basic relations, one needs the effective material properties of the reinforced structure using the micromechanical models in terms of material and geometric characteristics of the reinforcement and matrix as well as thermal loading.

The derivation and solution is confirmed analytically through comparison of the results with available ones in literature. The main novelty of this work is application graphene origami as a new metamaterial in the cylindrical shell structure subjected to different thermal loads.

Results reflect a decrease behavior in fundamental frequencies through an enhancement in temperature and folding degree of origami graphene auxetic metamaterial.