An enhanced constitutive model for the nonlinear mechanical behavior of the elastic-porous metal rubber

Xue, Xin; Ruan, Shixin; Bai, Hongbai; Chen, Xiaochao; Shao, Yichuan; Lü, Chen

doi:10.1016/j.mechmat.2020.103447

Cited by 24 publications

(10 citation statements)

References 23 publications

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“…Meanwhile, R 2 was defined to test the goodness of fit of the improved model, as shown in Equation (7):

where F i is the dynamic output force measured in the experiment,

is the average value of the dynamic output force, and

is the dynamic output force obtained through model simulation fitting. The correlation index R 2 was used to describe the fitting degree of the model; the closer R 2 is to 1, the better the prediction accuracy of the improved model, and the stronger the linear correlation between the actual variables and the predicted variables [ 27 ].…”

Section: Experimental Validationmentioning

confidence: 99%

Dynamic Characteristic Analysis of a Toothed Electromagnetic Spring Based on the Improved Bouc—Wen Model

et al. 2023

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Electromagnetic spring active isolators have attracted extensive attention in recent years. The standard Bouc–Wen model is widely used to describe hysteretic behavior but cannot accurately describe asymmetric behavior. The standard Bouc–Wen model is improved to better describe the dynamic characteristic of a toothed electromagnetic spring. The hysteresis model of toothed electromagnetic spring is established by adding mass, damping, and asymmetric correction terms with direction. Subsequently, the particle swarm optimization algorithm is used to identify the parameters of the established model, and the results are compared with those obtained from the experiment. The results show that the current has a significant impact on the dynamic curve. When the current increases from 0.5 A to 2.0 A, the electromagnetic force sharply increases from 49 N to 534 N. Under different excitations and currents, the residual points predicted by the model proposed in this work fall basically in the horizontal band region of −20–20 N (for an applied current of 1.0 A) and −40–80 N (for an application of 4.5 mm/s). Furthermore, the maximum relative error of the model is 12.75%. The R2 of the model is higher than 0.98 and the highest value is 0.9993, proving the accuracy of the established model.

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“…Meanwhile, R 2 was defined to test the goodness of fit of the improved model, as shown in Equation (7):

where F i is the dynamic output force measured in the experiment,

is the average value of the dynamic output force, and

Section: Experimental Validationmentioning

confidence: 99%

Dynamic Characteristic Analysis of a Toothed Electromagnetic Spring Based on the Improved Bouc—Wen Model

et al. 2023

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“…Metal rubber (MR), a type of metal porous material with excellent damping capacity, has been widely utilized under various engineering conditions. [16][17][18] Containing continuous metal wires with diameters of 0.05-0.3 mm prepared by series of specific processes, MR exhibits superior adaptability to harsh working environments such as high temperatures (up to 600 °C) and low temperatures (as low as À70 °C), space radiation, and corrosion when compared to conventional polymeric damping materials. [19] The 3D continuous network structure of MR provides a controllable and stable reinforcement phase distribution in metal matrix composites, exerting a strengthening effect on the metal matrix.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Property and Failure Mechanism of Metal Rubber/ZA8 Composite Made by Squeeze Casting Process

Lai,

Hu,

et al. 2023

Adv Eng Mater

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High‐performance lightweight composites are developed by integrating metal rubber (MR) into a zinc alloy (ZA8) matrix via squeeze casting. MR, comprising 304 stainless steel wires with diameters of 0.15 mm, forms three‐dimensional network skeletons with volume fractions of 8.8 vol.% (S1), 11.1 vol.% (S2), and 13.4 vol.% (S3), respectively. The preparation parameters of the composites are optimized, and their micro‐hardness is investigated. Special attention is paid to the ultimate compression and shear performance at 25 °C, 150 °C, and 250 °C. The microstructure and failure analysis are performed via SEM. The results reveal a 48.0% increase in micro‐hardness at composite interfaces relative to ZA8. At 25 °C, S2 possesses an ultimate compressive strength (UCS) of 401.4 MPa, which is 33.7% higher than that of ZA8. At 150 °C and 250 °C, S3 exhibits UCS values of 180.3 MPa and 74.3 MPa, exceeding those of ZA8 by 61.7% and 110.5%, respectively. Meanwhile, the ultimate shear strength of composites slightly drops below that of the matrix: the corresponding value of S1 specimen (158.4 MPa) at 250°C is 11.5% below that of ZA8. Therefore, compression and shear failure mechanisms of MR/ZA8 composites are quite intricate, involving SSW separation, necking, and ZA8 fractures.This article is protected by copyright. All rights reserved.

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“…The energy dissipation mechanism [34], mechanical model [35][36][37], mechanical properties, and influence parameters [38,39] of EPMM have been widely studied. The analysis of the preparation process of T-EPMM and W-EPMM shows that there are significant differences in their internal spatial network structure.…”

Section: Introductionmentioning

confidence: 99%

Compressive mechanical behavior and model of composite elastic-porous metal materials

Yang¹,

Zhou²,

Di³

et al. 2021

Mater. Res. Express

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This work presents the experimental characterization and theoretical modeling of composite elastic-porous metal materials (C-EPMM). C-EPMM is a novel porous metallic damping material made of wire mesh and wire helix. A series of quasi-static compressive experiments were carried out to investigate the stiffness and energy absorption ability of the C-EPMM with different mass ratios. The experimental results show that the mass ratios can significantly affect the stiffness and loss factor of C-EPMM. To efficiently predict the nonlinear mechanical properties of the C-EPMM a theoretical model of C-EPMM was proposed for the first time, the model was based on the manufacturing process. A comparison between the predicted data and the experimental data was conducted. The results show that the theoretical model can accurately predict the mechanical performance of C-EPMM. The conclusions derived from this work can provide a new method for adjusting the mechanical performance of EPMM in applications.

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An enhanced constitutive model for the nonlinear mechanical behavior of the elastic-porous metal rubber

Cited by 24 publications

References 23 publications

Dynamic Characteristic Analysis of a Toothed Electromagnetic Spring Based on the Improved Bouc—Wen Model

Dynamic Characteristic Analysis of a Toothed Electromagnetic Spring Based on the Improved Bouc—Wen Model

Mechanical Property and Failure Mechanism of Metal Rubber/ZA8 Composite Made by Squeeze Casting Process

Compressive mechanical behavior and model of composite elastic-porous metal materials

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