Papers by Keyword: Metal Rubber

Abstract: The paper mainly concerns about how relative density and pre-compression quantity of metal rubber shock absorber (MRSA) affect acceleration transmissibility, natural frequency and other parameters of MRSA. In order to study the influence law, sine wave sweep experiment was conducted on different MRSA, and the final data was processed. The influence law could provide reference for practical application of MRSA.

Abstract: Metal rubber material is a mesh structure woven by wire (metal rubber called MR), a new type of isolated-vibrated material with elastic rubber property ^{[1, 2]}. Static mechanical properties of MR are discussed in this paper. First of all, this paper introduces load-displacement function of micro element spring. And a constitutive model of MR is proposed. Secondly, this paper discusses how different parameters such as wire diameter and relative density influence energy dissipation. Also, compared the theoretical results with the experimental results in order to test the accuracy of the theory.

Abstract: Metal rubber is a new type of elastic damping material. It’s often used in all kinds of instruments and equipment to vibration isolation and buffer. The internal of metal rubber is mesh structure in space formed with wires. The contact points of the crossed wires aren’t solid collusion. Although the compressive strength of metal rubber is very good, but the structure of metal rubber would become loosly and destroyed under tensile load. Literature [1] put forward that the pulse discharge sintered to metal rubber can make the contact point transform to solid collusion. The method is based on the theory of resistance welding to the contact points between sintering metal wires in metal rubber. The research and analysis to the electricity characteristics of the metal rubber has important significance to optimize parameters of electrical pulse discharge experiment and improve the quality of sinter.

Abstract: Beginning from the manufacture process of metal rubber material, the structure and electromagnetic shielding mechanic were studied. Based on the flange coaxial test, the shielding efficiency of metal rubber samples was measured and the mathematic model of electromagnetic shielding efficiency was deduced. Using Schelkunoff formula the number and fitting curve of shielding efficiency were got. It can be concluded as a new kind of functional material, the metal rubber material would be widely used in the field of electromagnetic shielding and packing.

Abstract: Metal Rubber made by the specific process has excellent mechanical properties. Spiral coil winding is one of the keys in the process of forming Metal Rubber. This paper introduces the forming principle of the metal rubber spiral coil and the control of resilience amount in the forming process. A Spiral roll forming machine is designed for Metal rubber and it can be controlled automatically.

Abstract: Metal rubber is a kind of pure metal structure of the porous material. The paper, starting from the internal structure of metal rubber, based on the theory of porous, based on dry friction nonlinear theory, establishing the unit model of porous metal rubber material, for the development of product design and application of the metal rubber material to provide a theoretical basis.

Abstract: Dynamic load experiments of the disc-shaped metal rubber isolation component are performed. Through analyzing variation law of the parameters with amplitude and frequency, which are stiffness coefficient, damping coefficient and damping component factor, the hysteresis restoring force model which is able to fully reveal the dynamic characteristics of the component is established. The experimental verification results show that the theoretic calculations are consistent with the experimental data, which verifies the practicability and effectiveness of mathematical model and parameter identification. It has important practical significance for design of vibration isolation component with different requirements.

Abstract: Vibration can influence the imaging quality and tracking precision of the moving opto-electronic platform seriously, some measures of reducing vibration must be taken into consideration. In this paper the influence which vibration works on the imaging quality is analyzed, a novel design scheme of the damping mechanism is proposed, two new type Metal Rubber Isolators are designed, and two dimensional dynamic angle measuring instrument using linear CCD is applied to measure the dynamic rotational displacement of the opto-electronic platform. The result of vibration sweeping experiment shows that the isolator mechanism can reduce the three axis’ vibration higher than 25Hz. The angle-measurement result presents that the maximum rotational displacement is , which is suited to the demands of the imaging experiment.

Abstract: Transmissibility is the main performance evaluation index of Metal Rubber (MR) isolator, which can be got by sine sweep frequency test. At different temperature, the sine sweep frequency test is done with different structural parameter MR isolator. The influence that relative density and pre-deformation have on transmissibility and natural frequency when temperature changed is analyzed. The changing regularity of MR isolator’s transmissibility at different temperature is explored. Research results provide the basis for designing MR isolator.

Abstract: The fatigue damage test of metal rubber vibration isolator is performed, the result of which shows that fatigue damage performance of metal rubber is different from conventional solid materials. The damage of metal rubber which is accumulated with its inner partial broken and wore wires, results in deterioration of its macro-mechanical characteristic, macro-cracking and final fatigue failure, so it does not rupture as sudden failure of solid material. It is difficult to describe damage evolution of metal rubber in the microscopic perspective, and from a macro point of view, it is feasible method to describe degree of fatigue damage which bases on the changes of mechanical properties. In order to reflect the incremental cumulative damage degree of metal rubber, the stiffness damage and damping damage are used to accurately describe the fatigue damage process of metal robber, and the comprehensive damage factor is proposed to be the fatigue failure criterion. Damage factor can predict fatigue life of metal rubber specimen accurately, so it has reference significance to design of metal rubber