Viscous Material

From OpenSeesWiki
Jump to navigationJump to search

This command is used to construct a uniaxial viscous material object. stress =C(strain-rate)^alpha

uniaxialMaterial Viscous $matTag $C $alpha

$matTag integer tag identifying material
$C damping coeficient
$alpha power factor (=1 means linear damping)


1. This material can only be assigned to truss and zeroLength elements.

2. This material can not be combined in parallel/series with other materials. When defined in parallel with other materials it is ignored.


See Eqn 9 in G. Pekcan, J.B.Mander abd S.S. Chen, "Fundamental Considerations for the Design of Non-Linear Viscous Dampers", Earthqauke Engineering & Structural Dynamics 28,1405-1425 (1999)

Code Developed by: Mehrdad Sasani, NEU