Mechanical and Damping Characteristics of Knitted-Dapped Metal Rubber
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摘要: 为解决低刚度金属橡胶在实际应用中的不足, 制备了不同密度和厚度的编织-嵌槽型金属橡胶, 并对其进行了静态力学试验和动态力学试验, 研究了密度、厚度对金属橡胶静态刚度的影响以及频率、振幅、预压载荷对金属橡胶动态阻尼性能的影响。结果表明: 密度和厚度的增加均会增大金属橡胶的静态刚度; 频率对金属橡胶动态阻尼性能的影响不大; 随着振幅的增大, 金属橡胶的动态刚度减小, 阻尼耗能逐渐增多; 随着预压载荷的增大, 金属橡胶的动态刚度增大, 阻尼耗能逐渐增多。Abstract: Knitted-dapped metal rubber was developed to overcome the deficiencies of metal rubber with low stiffness in practical application and the samples with different density and thickness were manufactured. Static mechanical tests and dynamic mechanical tests were carried out to study the influences of density and thickness on static stiffness of the metal rubber, and the influences of frequency, amplitude and pre-load on dynamic damping characteristics of the metal rubber. The results show that static stiffness of the metal rubber raised with the density or thickness increasing. The frequency had little influence on the dynamic damping characteristics of the metal rubber. With the increase of the amplitude, the dynamic stiffness of the metal rubber decreased and the damping dissipation energy increased gradually. With the increase of the pre-load, the dynamic stiffness and the damping dissipation energy of the metal rubber all increased gradually.
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