弹性环金属橡胶支承结构刚度设计与试验验证

doi:10.7527/S1000-6893.2013.0071

Abstract

Abstract:

The elastic ring-metal rubber damper (MRD/ER) presented in this paper is a new type of oil-free rotor support structure different from the traditional squeeze film damper and proposed according to the vibration control in design criteria. The elastic ring provides its essential stiffness, the metal rubber provides part of the stiffness, and the metal rubber damping elements provide the main support damping. Both the elastic support and damping properties are achieved, making possible the optimal design of the critical speed and the vibration control of the rotor system. The linear supporting stiffness of the elastic ring-metal rubber damper is better than the traditional squeeze film damper, and it can effectively inhibit rotor vibration. Large amplitudes can be prevented by the amplitude limit convex platform to ensure system safety and reliability. An investigation on the structural design, a simulation analysis and mechanical experiments are conducted in this study. The quasi-static tests suggest that the stiffness of the damper is within the design scope and the damping property is good. The dynamic tests suggest that the dynamic stiffness and damping coefficients decrease with the increase of the excitation frequency. On a wide frequency range, the elastic ring-metal rubber possesses large damping coefficient.

Key words: elastic ring, metal rubber, structural design, vibration control, dynamic stiffness

CLC Number:

V214.9

MA Yanhong, LU Hongwei, ZHU Haixiong, HONG Jie. Structural Stiffness Design and Experimental Evaluation of Elastic Ring-metal Rubber Damper[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(6): 1301-1308.

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Structural Stiffness Design and Experimental Evaluation of Elastic Ring-metal Rubber Damper

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