Buckling and free vibration analyses of composite sandwich plates reinforced by shape-memory alloy wires

Abstract

Nowadays, shape-memory alloys (SMAs) are used in many applications to improve the mechanical behaviors of the structures. In this paper, the natural vibration and buckling behaviors of the composite sandwich plates reinforced by SMA wires are studied. Three-dimensional (3D) finite element method is employed to model and analyze the sandwich plates. The face sheets of the sandwich plates are considered to be layered orthotropic composite plate, while a soft isotropic material is used for the core. The face sheets are armed by the Ni-Ti-based SMA wires. The Active Property Tuning method is used for modeling the SMA-embedded sandwich plates. The modal and eigenvalue buckling analyses are performed to calculate the natural frequencies and buckling loads of the plates. The effects of plate's thickness, face sheet's thickness and plate aspect ratio and also boundary conditions on the natural frequencies and buckling loads of the plates are inspected. Comparison between obtained numerical results and those published in the literature confirms that the present modeling and vibration and buckling analyses of the SMA-reinforced composite sandwich plates are reliable and applicable.

A simple and efficient analytical model for the natural frequencies of sandwich plates made of flexible core and composite face sheets with embedded pre‐strained shape memory alloy wires

“…A parametric study in this research showed the effects of impulsive pressure, SMA wires location, SMA volume fraction, geometric parameters, as well as boundary conditions on the loss factor. Kheirikhah and Khosravi [ 35 ] used the finite element method to assess the SMA‐reinforced sandwich plates in buckling and free vibration. The main goal of the study was to examine the influence of plate thickness, face sheet thickness, plate aspect ratio, and boundary conditions on the vibration response and buckling of sandwich plates.…”

Analysis on the buckling performance of embedded co-cured composite sandwich plates under uniaxial compression condition

“…After examining the influence of lateral pressures on FEM and the reduction of buckling strength imposed on axially loaded sandwich cylindrical shell, Ohga et al [16] explained the reduced rigidity of axially loaded sandwich cylindrical shell under lateral pressure. Kheirikhah et al [17] paid attention to the natural vibration and buckling performance of SMA wire-supported composite sandwich plates. Zhang et al [18] later used the ANSYS software to forecast the modal loss factors affecting the embedded cocured composite structures.…”

Thermal post buckling analysis of smart SMA hybrid sandwich composite plate

“…LCP embedded with SMA analyzed for buckling behavior and also concluded the buckling resistance improvement with the utilization of SMA. 35–37 Samadpour et al 38 predicted the nonlinear vibration behavior to estimate critical buckling temperature (CBT) and natural frequency of composite plates embedded with SMA wires. The analysis was based on FSDT with the consideration of von Karman kinematics and Hamilton principle, and 1D Brinson constitutive model was employed to simulate shape memory effect in SMA.…”