I want to model an uplift restraint friction pendulum isolator(FPS) using SAP 2000. CSI referece manual has mentioned about Double-Acting Friction-Pendulum Isolator element which is based on the work by Roussis and Constantinou (2005) on the uplift restraint FPS. But such a link element is not directly available in SAP 2000. Can somebody suggest me a method by which I can model the uplift restraint FPS in SAP 2000.

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