充气式电流变减振器的设计和台架试验

The design and performance of new gas-filled ER damper

采用浮阀结构,研制外置充气式电流变减振器,进行了减振器台架试验.结果表明,对不同的油液粘度、速度、电压,示功图平滑、饱满,没有空程.在3kV和低速下,减振器阻尼力增大50%～400%,在0.6m/s以上阻尼力为零（或负）增长,主要原因是高速下电致成纤链的破坏几率增加.复原阻尼力与压缩阻尼力的分配可通过速度和电压的改变来调节.

A new gas-filled electro-rheological （ER） dampers was designed, constructed and tested, l he main structure parameters of influencing ER damper performance are discussed, some design principles of ER damper were given. The ER dampers were tested in vibration table, the effect of velocity, electric field strength, different composition of ER fluids and temperature on damping force were explored. In all cases, the force displacement loops were smoothness. At electric field strength of 3.0kV, the damping force was 50%～400% as much as that in absence electric field. At higher velocity, the damping force was decreased due to the breaking of chains.