Corrugated structures reinforced by shape memory alloy sheets: Analytical modeling and finite element modeling

Koudzari, Maryam; Zakerzadeh, Mohammad Reza; Baghani, Mostafa

doi:10.1177/0954410018782019

Cited by 10 publications

(6 citation statements)

References 30 publications

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“…These features make SMAs applicable to a variety of industrial applications (Koudzari et al, 2019;Baghani et al, 2014). The most frequent use of these materials falls in the field of biomechanics (Wever et al, 1997), in which NiTi is used for orthodontic arch-wires (Raboud, 1998) and bone staples (Russell, 2009).…”

Section: Introductionmentioning

confidence: 99%

A combined experimental and numerical study on shape memory alloy rods under torsion

Fahimi

Zakerzadeh

Baghani

2019

Journal of Intelligent Material Systems and Structures

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In this article, a study on modeling and experimental characterization of a shape memory alloy rod undergoing torsional loading is presented. According to former studies, the direction of twist is effective on the response of a shape memory alloy rod. Accordingly, we used Brinson’s improved model and adapted it for torsional loading. Referring a twist deformation in the clockwise direction to a positive twist and a twist deformation in the counter clockwise direction to a negative twist, the asymmetric response of the shape memory alloy rod is studied. The material parameters for Brinson model are derived from the experimental tests and there is a good agreement between the present asymmetric model and the experimental data. Also, material parameters are verified due to the experimental test in different temperatures. In one of the case studies, the average error of asymmetric and symmetric models with respect to the experimental test is 4% and 15%, respectively. A parametric study along with a study on the hysteresis inner loops in addition to model prediction for different temperatures is reported in the result section.

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Section: Introductionmentioning

confidence: 99%

A combined experimental and numerical study on shape memory alloy rods under torsion

Fahimi

Zakerzadeh

Baghani

2019

Journal of Intelligent Material Systems and Structures

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“…B. Background: Single-Layered Corrugated Structure 1) Generalized Stiffness Matrix: With the assumptions mentioned above, the single-layered corrugated structure can be approximated as an orthotropic classical Kirchhoff plate, with the relationship between stress and strain expressed as [30], [31]:…”

Section: A Parameter Definition and Assumptionsmentioning

confidence: 99%

Computational Design and Fabrication of Corrugated Mechanisms from Behavioral Specifications

Liu¹,

Yan²,

Mehta³

2020

Preprint

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Orthogonally assembled double-layered corrugated (OADLC) mechanisms are a class of foldable structures that harness origami-inspired methods to enhance the structural stiffness of resulting devices; these mechanisms have extensive applications due to their lightweight, compact nature as well as their high strength-to-weight ratio. However, the design of these mechanisms remains challenging. Here, we propose an efficient method to rapidly design OADLC mechanisms from desired behavioral specifications, i.e. in-plane stiffness and outof-plane stiffness. Based on an equivalent plate model, we develop and validate analytical formulas for the behavioral specifications of OADLC mechanisms; the analytical formulas can be described as expressions of design parameters. On the basis of the analytical expressions, we formulate the design of OADLC mechanisms from behavioral specifications into an optimization problem that minimizes the weight with given design constraints. The 2D folding patterns of the optimized OADLC mechanisms can be generated automatically and directly delivered for fabrication. Our rapid design method is demonstrated by developing stiffness-enhanced mechanisms with a desired out-of-plane stiffness for a foldable gripper that enables a blimp to perch steadily under air disturbance and weight limit.

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“…Due to the hysteretic properties of SMA wires, they observed a damped response of the sandwich beam. Koudzari et al 36 studied the trapezoidal corrugated beam, which is reinforced by SMA sheets on both sides, both analytically and numerically. The effect of asymmetric response in SMA plates under tensional and compressive loading on the deflection of the smart structure was studied.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of corrugated core sandwich panel with smart composite face-sheets under high-velocity impact

Maher

Khalili

Eslami‐Farsani

2022

Journal of Composite Materials

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The present research work investigated on the behavior of corrugated core composite sandwich panel (CCCS) with composite face-sheets reinforced by pseudo-elastic NiTi shape memory alloy (SMA) wires subjected to high-velocity impact experimentally. The number of SMA wires, their location, and their pre-strain percentage are the parameters studied in this investigation. The sandwich specimens were made by woven glass fibers/epoxy composite face-sheets strengthened by the SMA wires and Aluminum corrugated core and prepared using the wet hand lay-up method. Their behavior is evaluated under high-velocity impact test by a gas gun impactor testing machine. According to the results obtained, a significant change in the amount of energy absorption of the specimens containing SMA wires is observed. By increasing the number of the SMA wires, the energy absorption by the specimen is increased, but by pre-straining the SMA wires, the effect in energy absorption is significant. Also, when the projectile hits the SMA wire in CCCS, better properties in energy absorption can be observed. The results show that the energy absorption increased from 117.247 J for the specimen without the SMA wire to 128.749 J for the six SMA wires specimen. On the other hand, by applying the pre-strain to the SMA wires, the residual stresses in the specimens and hence the energy absorption in the specimen with six SMA wires with 3% pre-strain increased to 142.57 J.

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Corrugated structures reinforced by shape memory alloy sheets: Analytical modeling and finite element modeling

Cited by 10 publications

References 30 publications

A combined experimental and numerical study on shape memory alloy rods under torsion

A combined experimental and numerical study on shape memory alloy rods under torsion

Computational Design and Fabrication of Corrugated Mechanisms from Behavioral Specifications

Experimental analysis of corrugated core sandwich panel with smart composite face-sheets under high-velocity impact

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