期刊
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
卷 23, 期 5, 页码 1662-1700出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1099636219900668
关键词
Differential quadrature method; GPLs; AL-reinforced curved beam; honeycomb core; magnetic field; hygrothermal; bending
类别
资金
- King Faisal University [186366]
This study investigates the bending behavior of sandwich-curved beams with graphene/aluminum face sheets and aluminum honeycomb core using the differential quadrature method. A new curved beam theory is developed, taking into account various parameters and solving the governing equations numerically. Impacts of geometric shape parameters, magnetic parameter, temperature, moisture, elastic foundation parameters, core thickness, boundary conditions, and graphene weight fraction on displacements and stresses are illustrated.
Based on the differential quadrature method (DQM), the bending of sandwich-curved beams with graphene platelets/aluminum (GPLs/Al) nanocomposite face sheets and aluminum honeycomb core is investigated using a new shear and normal deformations curved beam theory. The present new model is resting on elastic foundation and subjected to a circumferential magnetic field, thermal load, and humid conditions. The face sheets are made of several bonded composite layers with randomly oriented and uniformly distributed graphene platelets in each layer. The mechanical and hygrothermal properties of the faces are assumed to be functionally graded (FG) using a piece-wise law by varying the weight fraction of the GPLs in the face thickness direction. Four governing differential equations are derived based on a novel four-variable curved beam theory taking into account the thickness stretching effect. The governing equations are solved for various boundary conditions on the basis of the DQM. The displacements presented by the DQM are compared with those obtained by Navier solution. Impacts of various parameters such as geometric shape parameters, magnetic parameter, temperature, moisture, elastic foundation parameters, core thickness, boundary conditions, and graphene weight fraction on the displacements and stresses of the functionally graded graphene/aluminum sandwich-curved beams are illustrated.
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