Hello everyone

I modelled a 4 storey 2d frame (with masses lumped at the corners) in abaqus with a tuned mass damper attached to the top storey. I used wire elements for modelling my frame and spring-mass-damper element ( inputting k and c values and inertia for mass) for tmd. I incorporated Rayleigh Damping too in my model . I ran a dynamic implicit analysis. But i'm getting the same displacement curve for both ( one with tmd and without tmd). Can anyone help me sort this out?