1. On nonlinear bending behavior of FG porous curved nanotubes
- Author
-
Fuh-Gwo Yuan, Wan-Shen Xiao, Gui-Lin She, Behrouz Karami, and Yiru Ren
- Subjects
Materials science ,Mechanical Engineering ,General Engineering ,Stiffness ,02 engineering and technology ,Bending ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,021001 nanoscience & nanotechnology ,Power law ,Condensed Matter::Materials Science ,020303 mechanical engineering & transports ,0203 mechanical engineering ,Buckling ,Mechanics of Materials ,medicine ,General Materials Science ,Boundary value problem ,Composite material ,medicine.symptom ,0210 nano-technology ,Porosity ,Material properties ,Reduction (mathematics) - Abstract
For the first time, the nonlinear bending behavior of porous functionally graded (FG) curved nanotubes is studied in this paper. The stiffness enhancement and stiffness reduction effects are described by the nonlocal strain gradient theory. The FG curved nanotubes have uniformly distributed pores in the radial direction. The material properties of the nanotubes corresponds to a modified power-law function. The asymptotic solutions of the curved nanotubes is obtained by using the two-step perturbation method. It shows that the nonlinear bending behavior of the curved nanotubes is influenced by the size effects, power law index, porosity distribution, temperature variation, boundary conditions, and physical dimension. Furthermore, the jump changes as well as snap-through buckling can take place when the FG curved nanotubes are under the influence of normal bending loads.
- Published
- 2019