About Modified IMK Model Parameters

[demirhanunlu]

Dear friends,

I am in need of three parameters for ModIMKPinching Material model in Opensees. Could you provide me the definitions and literature values for three parameters listed below:

$FprPos Ratio of the force at which reloading begins to force corresponding to the maximum historic deformation demand (positive loading direction)
$FprNeg Ratio of the force at which reloading begins to force corresponding to the absolute maximum historic deformation demand (negative loading direction)
$A_Pinch Ratio of reloading stiffness

Thanks in advance,
Demirhan
PhD Candidate

[demirhanunlu]

any ideas? still looking for the parameter explanations.

[selimgunay]

It may be useful to directly contact Dimitiros Lignos in EPFL Zurich.

[demirhanunlu]

Dit it and unfortunately no replies