基于MRFD的爆炸冲击隔震体系及其半主动控制

A BLAST SHOCK ISOLATION SYSTEM WITH MRFD AND THE SEMI-ACTIVE CONTROL

为有效减少爆炸冲击荷载对防护工程内人员及设备等的伤害,利用磁流变液阻尼器(MRFD)能够提供连续可调库伦阻尼力的特点,建立了基于MRFD的爆炸冲击隔震体系。对该体系进行了几种基于瞬时最优主动控制算法的半主动控制数值仿真分析,结果表明:选用合适的半主动控制算法及恰当的控制参数,利用MRFD进行冲击隔震,能有效控制结构在爆炸冲击荷载作用下的加速度反应。

To effectively reduce the damage of personnel and equipment in civil defense engineering subjected to blast shock wave, a shock isolation system with magnetorheological fluid dampers （MRFD） is established. MRFD can provide continuous and regulable coulomb friction, which is much efficient to reduce the accelerate response of the structure. The numerical simulation is completed by using a few semi-active control algorithms based on the instantaneous optimal active control algorithm. The results prove that the right semi-active control algorithms with suitable parameters can efficiently mitigate the structural response of acceleration.