These kinds of mechanical models which are used to analyze the mechanical abilities of mrd are compared . ( 2 ) the elastic - plastic seismic response analysis about the magnetorheological structure . the elastic - plastic seismic response analysis and compared analysis of the magnetorheological structure are carried with semi - active bi - state and foil - state control strategy when structure is simulated by three fold line stiffness retrograde model and mrd is simulated by sigmoid model , and corresponding conclusions are given
