Work

A unified multifield formulation for analysis of a sandwich graphene origami reinforced composite curved structure

Year: 2025

Type: article

Abstract: The present paper investigates influence of the graphene origami's characteristics and multi-load of piezoelectric materials on the frequency responses of a sandwich curved composed of a Graphene Origami (Gori) reinforced core. The Gori reinforced core is sandwiched with piezoelectric/piezomagnetic layers. A novel higher-order flexible model with thickness stretch-ability is employed for extension of the kinematic relations. The constitutive relations are derived using the important relations for effective material properties for Gori reinforced core and the multi-field equations for integrated piezoelectric/piezomagnetic layers. The natural frequency responses are presented with changes of foldability parameter and content of Gori as well as multi-field characteristics. An investigation on the geometric parameters of the sandwich curved beam and foundation's parameters is presented. A verification with available results of literature. The proposed model in this paper can be considered as an element of intelligent and controllable systems and structures with tunable responses and reflections.

Source: Scientific Reports

DOI: 10.1038/s41598-025-01209-6