STF4SW
Özgür Yurdakul's seismic-analysis tools are now maintained on GitHub, where they stay continuously updated, and are listed under Dissemination → Software. The interactive damper simulation is the Demo. Redirecting you there now; if nothing happens, use the links below.
Open the interactive demo ↗ Browse the tools under Software ↗ Özgür Yurdakul on GitHub ↗