Abstract
Metal rubber (MR) is an excellent damping material that is often used in practical engineering applications. The performance of MR in the nonforming direction is different from that in the molding direction, and research is rare; the anisotropy of MR is gradually revealed in many engineering applications because characterization and analysis of damping energy dissipation characteristics in the nonforming direction of cylindrical MR were carried out by the characterization method of damping materials. Based on the testing methods, dry friction and dynamic stiffness are taken as the main analysis points. By performing single‐factor control and orthogonal tests, the parameters affecting the energy dissipation and damping characteristics of MR are studied, and the main factors that cause changes in energy consumption and loss factor are analyzed. It is found that the influence of loading amplitude on damping energy is much higher than that of loading frequency, and the damping characteristic of MR is not sensitive to frequency. Therefore, the loading amplitude level of the actual environment should be considered first followed by the knitting technology in design of MR components.
Highlights
“Metal rubber” (MR) possesses the same macromolecular structure and elasticity as rubber, it is a metal product [1,2,3]
On the microcosmic point of view, the viscoelastic damping characteristics of the macroscopic MR are observed through the elastic deformation force of the spiral metal wire and the contact sliding interaction force between the spiral metal wires. erefore, it has great advantages of high bearing capacity, fatigue resistance, no aging phenomenon, high temperature resistance, large temperature difference, radiation resistance, and corrosion environment [4, 5]
Li and Huang [10] changed the test weight and the height of the MR. e loss factor is obtained by the analysis and calculation of the MR isolator, which provides a certain basis for the dynamic response analysis of the MR
Summary
“Metal rubber” (MR) possesses the same macromolecular structure and elasticity as rubber, it is a metal product [1,2,3]. Most of the studies are based on the mechanical properties and damping characteristics of the MR in the forming direction with few analyses in the nonforming direction. Erefore, it is necessary to further study the damping energy dissipation characteristics of an MR in the nonforming direction. E mechanical model of MR is established, which can comprehensibly describe the load-deformation relationship of MR These studies are based on statics, and there is almost no study on the dynamic damping energy dissipation characteristics of MR in the nonforming direction. 3. Damping Parameters and Testing Method of the MR Material in Nonforming Direction. The larger the loss factor is, the better the damping performance is: η
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