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Hello: I've had a similar problem lately about the rotational moment of inertia of the mass .I find you've defined it: set Im [expr 3.62*10e6],but Your quality definition doesn't exist: mass 2 $mass 1.0e-9 0.0 ,How to add this rotation moment of inertia of the mass to the model, Can I define it like...

Hello.In order to consider the bond slip of longitudinal reinforcement for Pushover analysis,I'm using Bond_SP01 material and zerolength element But I do not know how to get the bottom of the steel slip.I need to record what or what I need to do to calculate?