金属橡胶阻尼元件的力学模型及减振特性研究

Research on Dynamic Model and the Vibration Performance of Metal Rubber Damping Part

通过试验和理论相结合的方法,建立了金属橡胶材料的力学模型,研究了一种金属橡胶材料结构的非线形数学模型,以此来描述迟滞非线性系统的动态特性。用所建模型重构恢复力-位移迟滞回线,由此可以得到其变化规律。另一方面对金属橡胶阻尼元件进行了试验研究,得出了金属橡胶的静刚度曲线,总结了不同加速度激励水平、不同广义密度、不同配重对其振动性能的影响。结果表明,随着激励力和负载的增加,其减振效果更好。

A nonlinear mathematical model for metal rubber materials is developed by making use of the method of the combination of experimental and theoretical studies. A nonlinear model is established which describes the dynamic characteristics. The hysteretic loop between the resuming force and the displacement were obtained so as to study the relationships. In addition to,the performance of metal rubber damping part were investigated. The static characteristic of stiffness was got. Experiments were performed to study the effects of various excitation levels,various broad density and pre-stress on the vibration characteristics of metal rubber damping part. The results show that the larger the excitation level,the better the damping effect will be.