Viscous Wall Damper Modeling Guide – SAP2000, ETABS, PERFORM 3D

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This booklet provides guidelines for including Dynamic Isolation Systems VWDs in structural models of buildings subjected to earthquakes or wind. It also provides the basis for the nominal properties of these dampers and recommended property modification factor associated with the first cycle effect ( test).
The Viscous Wall Dampers discussed here are double vane dampers with a viscous fluid layer
thickness of 5mm. Schematic drawings for typical configurations of double vane VWDs are shown in Appendix C. Other configurations, such as single vane VWDs are also available. The modeling information in this booklet was prepared for DIS by Button Engineering. 
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Viscous Wall Damper Modeling Guide
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