Dissipation Characteristics and Parameter Identification of Metal Rubber Vibration Isolation Structure in Thermal Environment
Due to its sensitivity to temperature and the significant influence on vibration isolation per-formance,it is crucial to investigate the dissipation characteristic and parameter identification of metal rubber vibration isolation structure in thermal environments. In this study,a dual-layer metal rubber vi-bration isolation structure is designed. The influence of environmental temperature on the dissipation characteristic of the isolation structure is investigated. A nonlinear constitutive model for the dual-layer metal rubber isolation structure is established. At first,a series of dissipation characteristic tests are conducted on the isolation structure at different temperatures. Dissipation characteristic curves of the i-solation structure under various operating conditions are obtained. The dissipation coefficient,dissipated energy,and maximum deformation potential energy are calculated. The effects of temperature,ampli-tude,and frequency on the dissipation characteristic of the dual-layer metal rubber isolation structure are analyzed. Then,the parameters of the isolation structure are identified using nonlinear least squares method. A nonlinear functional constitutive model for the metal rubber isolation structure is established. It can accurately predict the dissipation characteristic curves of the isolation structure under different op-erating conditions.
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维普
