Vibration analysis of a micro-cylindrical sandwich panel with reinforced shape-memory alloys face sheets and porous core

Amiri, Ali; Mohammadimehr, Mehdi; Rahaghi, Mohsen Irani

doi:10.1140/epjp/s13360-021-01763-8

Cited by 9 publications

(1 citation statement)

References 36 publications

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“…Shape memory alloys (SMA) are a part of the most attractive smart materials, which possess several excellent unique attributes of shape memory effect (SME) and pseudoelasticity (PE) [1][2][3]. The thermodynamic behavior of composite laminates embedded with SMA wires in engineering components exhibit distinctive behavior of SMA, which are associated with martensitic phase transformation due to changes in the stress and/or temperature [4][5][6][7][8]. Embedding SMA wires to composite laminates in symmetric or antisymmetric distribution form has numerous applied beneficial effects on utilizing both temperature-induced and stress-induced phase transformations and results in the variation of modulus and recovery stresses generation and thus modal modification.…”

Section: Introductionmentioning

confidence: 99%

Thermal Modal Performance of Composite Laminates Embedded with Anti-Symmetric Oblique Coupling Gradient Pre-Strained SMA Wires for Suppressing Resonance

Huang

Shi

2022

Symmetry

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As an extension of conventional gradient, anti-symmetric oblique coupling gradient has a superior modal modification ability on composite laminates embedded with pre-strained shape memory alloys (SMA) wires, which is beneficial to suppress modal resonance of composite laminates in the thermal environment. This paper presents an anti-symmetric oblique coupling gradient model of SMA along the thickness direction. That is, the gradient model of SMA wires’ orientation and the positive and negative gradient model of SMA volume fraction. Considering the internal force of composite laminates composed of the pre-strain recovery force of SMA and the thermal expansion force of the substrate, the free vibration equation of composite laminates with additional internal forces energy is derived from first-order shear plate theory and Hamilton principle. The influence of coupling gradient parameters on the thermal modal performance of SMA composite laminates is analyzed and verified by experiments. The proposed anti-symmetric oblique coupling gradient SMA wires’ distribution form effectively exerts the recovery stress generated by SMA tensile pre-strain, i.e., effectively improves the stiffness and critical buckling temperature. Coupling gradient distribution broadens the frequency modulation range, which makes the fine regulation of the natural frequency and critical buckling temperature feasible.

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