Theoretical investigation on the buckling behavior of smart composite sandwich panels with viscoelastic core and shape memory alloy included skins

Karimiasl, Mahsa; Ahmadi, Hamed

doi:10.1002/pc.26229

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…This characteristic allows optimal performance without affecting structural integrity. In the recent past, a significant amount of research articles have been published on sandwich panels highlighting the vibration behavior of such 2‐D structures 1–5 …”

Section: Introductionmentioning

confidence: 99%

“…In the recent past, a significant amount of research articles have been published on sandwich panels highlighting the vibration behavior of such 2-D structures. [1][2][3][4][5] Depending on the application of sandwich composite shell panels, the choice of face sheets and core materials plays a pivotal role. One of the fascinating materials is graphene nanoplatelets (GPLs), that are used as reinforcement because of their excellent modulus of elasticity, high thermal conductivity, and remarkable fracture strength.…”

Section: Introductionmentioning

confidence: 99%

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Non‐linear thermoelastic vibration and optimum frequency prediction of sandwich composite corrugated panels with honeycomb auxetic core

Kumar,

Rathore,

Kar

et al. 2023

Polymer Composites

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In this article, the non‐linear free vibration behavior of sandwich composite panels with sinusoidal corrugations is examined. These panels consist of a top and bottom skin made of a graphene‐reinforced composite, with an auxetic honeycomb core having negative Poisson's ratio. The non‐linear kinematic field is based on Kant's higher‐order shear‐deformation theory and the Green‐strain, which incorporates all the higher‐order terms. By implementing the Hamilton principle, the non‐linear governing equations are affirmed and solved further through 2D‐isoparametric finite element approximations via Lagrangian elements in conjunction with Picard's successive iterative scheme. The comparison and validation tests demonstrate the correctness of the present model. The established sandwich model is further employed for various parametric conditions by varying the core‐to‐face sheet thickness, auxetic honeycomb properties, graphene volume fraction, shell configurations, temperature, and support conditions. These numerous results exemplify the non‐linear frequencies at small‐to‐large amplitudes for the sandwich shell structures and are discussed in detail. In addition, a multi‐objective parametric optimization is conducted using the response surface method to investigate the optimal values of the corrugated auxetic honeycomb shell panel's parameters, resulting maximum frequency.Highlights Non‐linear vibration of corrugated sandwich shell panel. Graphene reinforced skins and honeycomb auxetic core. Kant's higher‐order shear‐deformation theory and Green‐Lagrange non‐linearity. Hamilton principle and Picard's successive iterative scheme. Multi‐objective parametric optimization and prediction using response surface methodology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non‐linear thermoelastic vibration and optimum frequency prediction of sandwich composite corrugated panels with honeycomb auxetic core

Kumar,

Rathore,

Kar

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…These weaknesses were resolved by the development of smart materials, such as shape memory polymers (SMPs) [2], magnetorheological (MR) [3], and electrorheological (ER) fluids [4]. Sandwich structures with these smart materials need only an external power supply to be activated and have the advantage of better adaptability to external changes [5]. However, long-term use of external power supply damages other devices due to electric breakdown.…”

Section: Introductionmentioning

confidence: 99%

Vibration Characteristics of Shear Thickening Fluid-Based Sandwich Structures

Qian

Chen

Qian

et al. 2022

Advances in Polymer Technology

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The vibration attenuation mechanism of shear thickening fluid- (STF-) filled sandwich structures was investigated in this study. Structural equivalent damping, stiffness, and mass increased simultaneously with the increase in the volume fraction of shear thickening fluid. However, the damping ratio decreased and natural frequency increased with the increase in structural mass. Thus, the damping ratio was not a monotonically increasing function of the volume fraction of STF. A modified shear strain model of the damping layer was developed based on the following conditions: (1) under the condition of small strain, shear thickening fluid was regarded as linear viscoelastic material, and (2) the warpage of the sandwich beam was considered during deformation and the influence of STF on the shear strain of sandwich beam. According to the modified shear strain model of the damping layer, the shear thickening occurred at 1 Hz to 20 Hz during vibration. Therefore, the resonance point of the structure shifted to the left. The predictions were in excellent agreement with the experimental results. The results demonstrated that shear thickening fluid improved the vibration damping performance of the sandwich structure, while the thickening ability was not the higher, the better.

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“…[29][30][31] Failure modes are mainly composed of local buckling, [32,33] global instability, [34] or postbuckling. [35][36][37][38] The buckling model [39,40] of composite laminates is established theoretically, which is beneficial to the structural design of beams. The bearing capacity verification forms of C-beam include four-point bending, [41] shearing and coupled loading.…”

mentioning

confidence: 99%

Postbuckling behavior and failure prediction of large‐size composite C‐beam under bending‐shear coupling load

et al. 2023

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In this article, a novel experimental device that combines bending and shearing was proposed to investigate the load‐bearing performance of large‐size C‐beam structures against bending‐shear buckling, allowing for the adjustment of bending‐shearing ratio. Three different bending‐shear coupling conditions were performed for test loading, and the strain gauges were carried out to detect the strain distribution for postbuckling performance of the large‐size C‐beam. The finite element models were established by ABAQUS/Explicit to explore the stress distribution and damage evolution during postbuckling failure. Thereafter, the LaRC05 and Hashin criterion was used for failure prediction of the large‐size C‐beam in numerical simulations. The experiment results show that the large‐size C‐beam has excellent postbuckling bearing capacity regardless of bending or shear resistance. Based on the results, the failure numerical model considering the stress distribution in postbuckling and the finite element calculation were in good agreement with experiments. This study can offer a practical reference for the postbuckling performance of large‐size C‐beam structures after bending‐shear coupling.

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Theoretical investigation on the buckling behavior of smart composite sandwich panels with viscoelastic core and shape memory alloy included skins

Cited by 5 publications

References 33 publications

Non‐linear thermoelastic vibration and optimum frequency prediction of sandwich composite corrugated panels with honeycomb auxetic core

Non‐linear thermoelastic vibration and optimum frequency prediction of sandwich composite corrugated panels with honeycomb auxetic core

Vibration Characteristics of Shear Thickening Fluid-Based Sandwich Structures

Postbuckling behavior and failure prediction of large‐size composite C‐beam under bending‐shear coupling load

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