Reliability Analysis of Semiactive Magnetorheological Dampers Subjected to Harmonic Excitations

Abstract EN

It has been seen that semiactive magnetorheological (MR) dampers are not sometimes reliable when employed in the building to contract acceleration demand of the stories.

In the current paper, a three-storey sample building with semiactive MR dampers subjected to harmonic base excitation is taken under examination to clarify the reliability of such semiactive control systems in mitigation of absolute acceleration response of the buildings.

Comparison between semiactively controlled building and uncontrolled original building is chosen as an implicit reliability limit-state function.

Firstly, first-order reliability method (FORM) is engaged to examine the reliability of the system by linearizing the chosen nonlinear limit-state function.

Afterwards, Monte Carlo simulation (MCS) is used to verify the obtained results by FORM method.