In some papers, I have read modeling about hook elements in sap2000. I need to know how it is done. I know about gap or link elements but hook element is a newer thing to me.
Hook element is a kind of spring in SAP2000 which works just in tension and do not have stiffness during compression . In geometric nonlinear analysis with SAP2000 you can define a specific opening ( for example 5 cm ) for this element and it will act after this opening . If displacement of this element exceeds opening value ( in our example 5 cm ) this Hook spring will be in tension .