Abstract
In this article, deformation and mechanical response of a rubbery metallic material were investigated. First, the mesoscopic structural properties of the material and its evolution during part producing were analyzed and described in detail. Then the inherence relationship between the macroscopic mechanical properties and mesoscopic structural characteristics were studied, in which the related mesoscopic structural characteristics were limited in the basic unit (mm) scale such as the radius of metal wire and unit coil, etc. Furthermore, according to the mesoscopic properties of the material, a curved beam unit based on the mesoscopic scale and shape factor was introduced to bridge the mechanical response and the mesoscopic parameters such as the beam orientation and spatial distribution. In the end, a mesoscopic stiffness model was proposed, from which the macroscopic mechanical properties of material could be deduced from the mesoscopic characteristic size, shape and the mechanical properties of base metallic material.
Highlights
In recent years, a kind of rubbery metallic material (RMM) has been applied as some kinds of seal material, heat shield material, filters, gaskets and aircraft engine mounts in a large number of industrial fields where crude rubber material have been usually served, owing to its excellent applicability of environment and longer life
A mesoscopic stiffness model was proposed, from which the macroscopic mechanical properties of material could be deduced from the mesoscopic characteristic size, shape and the mechanical properties of base metallic material
According to the studies from open literature, we only find that fewer tests conducted by Childs [1], which relate to this material for possible application in the high-pressure fuel turbo pump on space shuttle
Summary
A kind of rubbery metallic material (RMM) has been applied as some kinds of seal material, heat shield material, filters, gaskets and aircraft engine mounts in a large number of industrial fields where crude rubber material have been usually served, owing to its excellent applicability of environment and longer life Among these applications, the most exciting lies in its application in aerospace as a vibration absorber since the space environment needs the absorber possesses a wide range of temperature adaptability and more than several years life, while crude rubber cannot competent for. According to the studies from open literature, we only find that fewer tests conducted by Childs [1], which relate to this material for possible application in the high-pressure fuel turbo pump on space shuttle The results of their bench test showed good damping characteristics, but numerical quantities were not reported.
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