杠杆型串联非线性能量阱整星隔振系统的振动控制

Vibration control of a whole star vibration isolator system based on lever-type series nonlinear energy sinks

提出一种杠杆型串联非线性能量阱的整星系统的振动控制方法。首先,基于谐波平衡法结合伪弧长延伸法,得到系统的幅频响应曲线。其次,分析了杠杆型串联非线性能量阱的质量、非线性刚度以及杠杆支点位置对系统幅频响应的影响。最后,对比研究了在相同附加质量条件下,杠杆型串联非线性能量阱与杠杆型并联非线性能量阱的吸振性能。仿真结果表明,在附加质量相同的条件下,杠杆型串联非线性能量阱的吸振性能要优于杠杆型并联非线性能量阱。

In this paper,a novel vibration control method for a whole star system with series nonlinear energy sink is presented.Firstly,the amplitude-frequency response curves of the system were obtained based on the harmonic balance method and the pseudo-arc length extension method.Secondly,the influences of mass,nonlinear stiffness,and position of lever fulcrum on the amplitude-frequency response of the system were studied.Finally,the vibration absorption performance of NES in parallel with levers and NES in series with levers was compared under the same additional mass condition.Results indicate that the vibration absorption performance of the lever-type series was better than of the lever-type parallel NES under the same additional mass condition.