基于周期耗能相等的原理,将磁橡胶约束阻尼悬臂板(MRLD)与传统的约束阻尼悬臂板(PCLD)等价,研究MRLD的摩擦耗能机理。研究表明,摩擦力Fs主要是通过改变阻尼层发生滑移的区域来影响MRLD的阻尼。在同一模态,尽管激励力不同,但所能获得的最大损耗因子是一样的。
The mechanism of friction dissipation energy of a cantilever plate with magnetic rubber layer damping treatment ( MRLD ) were investigated based on the equality of dissipation energy by MRLD to the identical plate with passive constrained layer damping treatment ( PCLD ) in a vibrating cycle. The results reveal that it is mainly by changing the slip region of damping layer in which frictional force Fs exposes effect on the system modal damping capacity. At the same resonant frequency, the available maximal modal loss factor is same in spite of excitating force F is different.