Combined stiffness characteristic of metal rubber material under vibration loads

Fu, Hailong; Hua, Zhengli; Zou, Longqing; Wang, Yue; Ye, Jianbin

doi:10.1177/0954406219859039

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…When the metallic braided tube is subjected to the axial load, the volume of the metallic braided tube changes with axial elongation and the metal wires rub and contact each other, meaning the axial stiffness of the metallic braided tube presents nonlinear characteristics. According to the theories of previous scholars [19][20][21], the axial stiffness of the metallic braided tube can be expanded by repeating the Taylor series three times, as shown below:…”

Section: The Mechanical Properties Of Wires Under Tensile Loadmentioning

confidence: 99%

Research on the Tensile Mechanical Properties of a Braided Corrugated Hose and Its Axial Stiffness Model

Huang

Zhang

2021

JMSE

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Braided corrugated hoses are widely used in displacement compensation and vibration absorption environments due to their excellent flexibility and energy dissipation properties; however, the axial stiffness has rarely been discussed before as an important physical property of braided corrugated hoses. In this paper, the theoretical axial stiffness model for braided corrugated hoses is established based on the energy method and the theory of the curved beam. The influences of the braiding parameters of the metallic braided tube and the structural parameters of the bellows on the axial stiffness are also discussed. Through finite element tensile testing, the axial stiffness curves of the braided corrugated hose under different braiding angles and different wire diameters are obtained. The theoretical axial stiffness model is in good agreement with the simulation experiment, which reflects the nonlinear effects of the braiding angle and wire diameter on the braided corrugated hose. This paper provides an accurate method and basis for the design of braided corrugated hoses in the future.

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Section: The Mechanical Properties Of Wires Under Tensile Loadmentioning

confidence: 99%

Research on the Tensile Mechanical Properties of a Braided Corrugated Hose and Its Axial Stiffness Model

Huang

Zhang

2021

JMSE

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“…The other part is the relative sliding of numerous contact points among the wires when metal rubber is pressed by the external forces, resulting in the dry friction damping. 17 The two kinds of damping forces are the main components of the dynamic equation and full of complex nonlinear characteristics.…”

Section: Dynamic Modelmentioning

confidence: 99%

Optimization on hysteresis dynamic model of metal rubber material based on dry friction damping term

Tao

Wang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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As one kind of porous elastic metal material, metal rubber is used in vibration isolation widely due to its better damping characteristic. During loading and unloading, the elastoplastic deformation and damping characteristics of this material are usually described by constructing its dynamic model. Although traditional models can describe the hysteresis performance, the accurate parameter identification of material structure under different preparation conductions is limited due to its complex expression or equivalent math form. In this paper, a dynamic hysteresis model is optimized through adding a dry friction damping term based on the micro-element analysis theory and analysis method of material mesoscopic structure. The relation among the manufacture technic, size of metal wire and vibration parameters were established, which accurately describes hysteresis characteristic of metal rubber by dry friction when the metal wires are in the state of slipping contact. The result is verified by the harmonic vibration experiment that the model has good adaptability and convenience, especially can improve the accuracy and convenience of parameter identification on the forming materials of metal rubber.

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“…Metal mesh dampers constructed by intertwined helix metal wires have been considered as alternatives to traditional viscoelastic dampers owing to the increasing need for a higher load capacity in extreme temperature conditions. By taking advantage of abundant dry friction joints within the complicated wire mesh structure, metal mesh dampers provide larger energy dissipation than rubber dampers [4]. Exhaustive experimental work has demonstrated the aerospace applications of metal mesh dampers fabricated with shape memory alloys (SMAs) [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Dynamic Response to Sinusoidal Excitation of the Elastic Porous Metal Mesh Damper

Shao

Song

Xin

et al. 2021

Shock and Vibration

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As a promising device of vibration isolation for rocket engine turbopumps, turbine engines, and other kinds of rotordynamic applications, the elastic porous metal mesh damper (MMD) has drawn large attention from researchers. It exhibits higher load capacity and environmental adaptivity than traditional viscoelastic damping materials owing to the excellent combination of metallic properties and the rubber-like damping performance. However, the design of a metal mesh damper relies heavily on the trial-and-error methodology for tuning fabrication parameters, which prevents it from widespread use in rotor-bearing applications. Therefore, efforts are directed toward forging an explicit link between fabrication parameters and the dynamic behaviors of MMDs in the present work. Quasistatic and dynamic mechanical tests are carried out to help determine the primary factor that influences the damping performance of the MMD and to demonstrate how the dynamic behaviors of MMDs evolve with the fabrication parameters. Furthermore, two different modeling methodologies, i.e., the FE method and the mixed damping approach, are used to predict the hysteresis behaviors of the dampers. The latter method not only properly reproduces the experimental results but also makes it possible to build an intuitive connection between the fabrication procedures and the dynamic mechanical behaviors of the MMDs. The orthogonal test results determine that the mesh density plays a dominant role in controlling both the load capacity and damping performance of the MMDs. By integrating mesh density and motion amplitude into the expression of parameters including stiffness coefficient, damping coefficient, and damping component factor, the mixed damping model demonstrates excellent predictive accuracy under different excitation conditions.

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Combined stiffness characteristic of metal rubber material under vibration loads

Cited by 10 publications

References 7 publications

Research on the Tensile Mechanical Properties of a Braided Corrugated Hose and Its Axial Stiffness Model

Research on the Tensile Mechanical Properties of a Braided Corrugated Hose and Its Axial Stiffness Model

Optimization on hysteresis dynamic model of metal rubber material based on dry friction damping term

Simulation of the Dynamic Response to Sinusoidal Excitation of the Elastic Porous Metal Mesh Damper

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