Mechanical behaviour of hollow-tube stackings: Experimental characterization and modelling of the role of their constitutive material behaviour

Marcadon, V.; Davoine, Cécile; Passilly, B.; Boivin, Denis; Popoff, F.; Rafray, A.; Kruch, Serge

doi:10.1016/j.actamat.2012.06.045

Cited by 22 publications

(16 citation statements)

References 30 publications

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“…Various combinations of SMAs and other materials have improved the material performance such as triple-state changing effect presented in [12] combining SMA wires and shape memory polymer matrix. Marcadon et al [13] presented another interesting study exploring the influence of the constitutive material behavior on the effective mechanical properties of brazed cellular materials using tubes made of…”

Section: Introductionmentioning

confidence: 99%

Superelastic cellular NiTi tube-based materials: Fabrication, experiments and modeling

Machado

Louche

Alonso

et al. 2015

Materials & Design (1980-2015)

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The authors wish to acknowledge the financial support of the French ANR research program ANiM: Architectured NiTi Material (N.2010 BLAN 90201)International audienceThe aim of this paper is to present an experimental and modeling study as the first step towards designing and optimizing architectured materials constituted of NiTi tubes. The idea is to combine the intrinsic and novel properties of nickel–titanium shape memory alloys with purposely engineered topologies. By joining thin-wall superelastic tubes via electrical resistance welding, we create regular cellular material demonstrators. The superelastic behavior of two simple architectured materials based on identical tubes, but with two topologies, are experimentally characterized and modeled using finite element approaches. The predicted behaviors are compared by simulating complex loading, exploring the influence of the constitutive material behavior on the effective mechanical properties of cellular materials. The parameters of the constitutive equations are identified on tensile tests performed on small dog-bone shaped specimens, machined from the tubes by spark cutting. The modeling results are finally compared with compression tests performed on these simple architectured NiTi materials. As a further validation of the proposed study, two large cell structures (square and hexagonal stacking) were modeled to gain greater insight into the role of different architectures

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Section: Introductionmentioning

confidence: 99%

Superelastic cellular NiTi tube-based materials: Fabrication, experiments and modeling

Machado

Louche

Alonso

et al. 2015

Materials & Design (1980-2015)

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“…properties [3,4,17,18,19]. This first step is thus necessary to be able to propose a predictive model of the mechanical behavior of the tube stacking structure and to enrich the comparison with the experiment detailed in Part II of this work [7].…”

Section: Mechanical Behavior Of the Constitutive Materialsmentioning

confidence: 99%

“…Since the stress-strain curves showed an inflection of the hardening when increasing the strain level, on the basis of our previous works [4] a sum of non-linear exponential hardening terms has been used to account for such a plasticity saturation phenomenon:…”

Section: Identification Of An Elasto-viscoplastic Model From Room Temmentioning

confidence: 99%

“…Thus, regular stackings can be manufactured with only few defects, which enables a very rich dialogue between experiment and modeling involving large deformations and contact issues. The main mechanism that governs the mechanical behavior of tube stackings is the localized plasticity in the walls of the constitutive cells [3,4]. Therefore, this is significantly different from the case of honeycombs loaded transversally, for which buckling and cell wall instabilities are observed [5,6].…”

Section: Introductionmentioning

confidence: 99%

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High temperature mechanical behavior of tube stackings – Part I: Microstructural and mechanical characterization of Inconel® 600 constitutive material

Marcadon

Davoine

Lévêque

et al. 2016

Materials Science and Engineering: A

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This paper is the first part of a set of two papers dedicated to the mechanical behavior of cellular materials at high temperatures. For that purpose, cellular materials made of brazed tube stacking cores have been considered here. This paper addresses the characterization of the elasto-viscoplastic properties of the constitutive material of the tubes, Inconel R 600, by means of tensile tests. Various temperatures and strain rates were investigated, from room temperature to 800 • C, in order to study the influence of both the brazing heat treatment and the test temperature on the mechanical properties of Inconel R 600. Whereas the heat treatment drastically decreases the strength of the tubes, a significant viscous effect is revealed at 800 • C. Electron backscattered diffraction

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“…structural applications, a well-known example of mesoscale organized material is the honeycomb structure [29]. These last years, in engineering science, the classical boundary between material and structure has been blurred [38,16], and the center of interest has been shifted from homogeneity to heterogeneity and from isotropy to anisotropy. Such an evolution has been sustained by important progress make both in the fabrication of material (e.g.…”

mentioning

confidence: 99%

On the isotropic moduli of 2D strain-gradient elasticity

Auffray

2013

Continuum Mech. Thermodyn.

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In the present paper, the simplest model of strain-gradient elasticity will be considered, that is the isotropy in a bidimensional space. Paralleling the definition of the classic elastic moduli, our aim is to introduce second-order isotropic moduli having a mechanical interpretation. A general construction process of these moduli will be proposed. As a result it appears that many sets can be defined, each of them constituted of 4 moduli: 3 associated with 2 distinct mechanisms and the last one coupling these mechanisms. We hope that these moduli (and the construction process) might be useful for the forthcoming investigations on strain-gradient elasticity.

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Mechanical behaviour of hollow-tube stackings: Experimental characterization and modelling of the role of their constitutive material behaviour

Cited by 22 publications

References 30 publications

Superelastic cellular NiTi tube-based materials: Fabrication, experiments and modeling

Superelastic cellular NiTi tube-based materials: Fabrication, experiments and modeling

High temperature mechanical behavior of tube stackings – Part I: Microstructural and mechanical characterization of Inconel® 600 constitutive material

On the isotropic moduli of 2D strain-gradient elasticity

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