Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Ma, Yuanyuan; Zhang, Qicheng; Zhang, Dayi; Scarpa, Fabrizio; Gao, Di; Hong, Jun

doi:10.1007/s10853-016-0478-3

Cited by 29 publications

(19 citation statements)

References 27 publications

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“…On the other hand, with the increase of ambient temperature, the amount of thermal expansion of the wire helixes will become larger. As shown in Figure 10, there are three types of interaction (non-contact, slip, and stick) between the wire helixes in the EMWM during compression [28,29]. The effective stiffness for slip and stick is greater than that for non-contact.…”

Section: Resultsmentioning

confidence: 99%

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A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

Ding

Bai

et al. 2019

Materials

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Entangled metallic wire material (EMWM) is a kind of porous damping material. To promote the engineering application of EMWM, it is necessary to establish the constitutive model of EMWM to estimate its mechanical properties. In this paper, a series of quasi-static compression experiments for plate-like EMWM specimens made of austenitic stainless steel wire (06Cr19Ni10) with different densities were carried out in the temperature range of 20–500 °C. It was found that the stiffness of the plate-like EMWM would increase with the increases in the ambient temperature. The non-linear characteristics of the force–displacement curve of the plate-like EMWM would be weakened. Taking the spatial structural characteristics of the plate-like EMWM and the influence of the thermal expansion of the structure into account, a new constitutive model for plate-like EMWM was presented by the combination of the Johnson–Cook model and the Sherwood–Frost constitutive framework model. The accuracy of the model was verified by the experimental data under different temperatures. The results show that the calculated results of the model are consistent with the experimental results. This model can provide an effective theoretical basis for predicting the mechanical properties of plate-like EMWM and guiding its design.

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Section: Resultsmentioning

confidence: 99%

“…The friction is related to the number of contact points and the contact area inside the EMWM. It can be known from the literature [28] that the relationship between the internal elastic stress σ e and the frictional stress σ f of the EMWM can be expressed as Equation 11.…”

Section: Shape Functionmentioning

confidence: 99%

A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

Ding

Bai

et al. 2019

Materials

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“…A large amount of energy is thus dissipated, exerting a damping effect. According to the experimental data in previous literature, the MPR-SR composite element based on Cr18Ni9Ti austenitic stainless-steel wires has low tensile strength and shear stiffness, and cannot fully dissipate the vibration energy of a structure under a heavy load [13][14][15][16][17][18]. The silicon rubber (SR) is a linear high-molecular weight polyorganosiloxane, featuring good high-temperature resistance and excellent damping performance.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Metallic Pseudo Rubber-Silicon Rubber Composite for Three-Way Seismic Isolation

Zhao¹,

Ding²,

Ying³

et al. 2019

RCMA

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This paper mainly carries out the preliminary work for the design of an innovative three-way seismic isolator based on the metallic pseudo rubber-silicon rubber (MPR-SR) composite. First, the MPR-SR composite was prepared by adding the SR, a high-molecular polymer, to the MPR, and several MPR-SR specimens of different molding densities were prepared. Next, the specimens were subjected to compression and shear tests under quasi-static and dynamic loads, respectively. Several tests were carried out to reflect how these behaviors are affected by load amplitude, cycle count, loading frequency and molding density. The mechanical properties and damping features between the specimens were compared and analyzed in details. On this basis, the author examined the mechanical properties and SI mechanism of the MPR-SR composite. The results show that the MPR-SR composite has good recoverability under compressive and shear deformations: the composite can recover even if 40% of it has been deformed under compression and 80% under shear load; the hysteretic energy dissipation ability of the composite increases with the molding density; the loading frequency and cycle number have basically no impact on the compressive hysteretic behavior of the composite. To sum up, the MPR-SR enjoys good stiffness and energy dissipation ability, and serves as an excellent material for anti-corrosion, antioxidant three-way seismic isolator.

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“…In this paper we describe the design and testing of a tensegrity prism with internal metal rubber (MR) inserts assembled within the struts (compressive elements) [16]. MR is a class of innovative porous damping materials with high energy absorption capabilities, made of entangled metal wire by mold compression [17]. Metal rubber could operate in harsh environments with ambient temperatures ranging between -100℃ to 200℃ [18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Meta-tensegrity: Design of a tensegrity prism with metal rubber

Zhang

Dobah³

et al. 2018

Composite Structures

Self Cite

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A tensegrity structure involves the presence of elements withstanding pure compression, and others under pure tension only. Metal rubber is introduced into a tensegrity prism strut to create a mechanical metamaterial with energy absorption and tuneable dynamic properties. In this work we describe the design and development of the meta-tensegrity structure with particular emphasis on the evaluation of parameters such as the structural size, the metal rubber stiffness, the initial internal force and the external compression load. Prototypes of tensegrity prisms with and without metal rubber inserts have been assembled and subjected to quasi-static loading. The model used to design the meta tensegrity prism has been then modified to take into account specific manufacturing and internal dissipation mechanisms typical of this configuration. The updated model provides a better comparison with the experimental results. Both the theoretical and experimental data show that the introduction of the metal rubber within the tensegrity configuration contributes to improve significantly the energy absorption, and to reduce the stiffness of the whole tensegrity structure.

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Size-dependent mechanical behavior and boundary layer effects in entangled metallic wire material systems

Cited by 29 publications

References 27 publications

A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

Mechanical Properties of Metallic Pseudo Rubber-Silicon Rubber Composite for Three-Way Seismic Isolation

Meta-tensegrity: Design of a tensegrity prism with metal rubber

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