4.2.16.2. VS3D4¶
This command is used to construct a four-node 3D viscous-spring boundary quad element object based on a bilinear isoparametric formulation.
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element
('VS3D4', eleTag, *eleNodes, E, G, rho, R, alphaN, alphaT) eleTag
(int)unique element object tag eleNodes
(list (int))4 end nodes E
(float)Young’s Modulus of element material G
(float)Shear Modulus of element material rho
(float)Mass Density of element material R
(float)distance from the scattered wave source to the boundary alphaN
(float)correction parameter in the normal direction alphaT
(float)correction parameter in the tangential direction
Note
Reference: Liu J, Du Y, Du X, et al. 3D viscous-spring artificial boundary in time domain. Earthquake Engineering and Engineering Vibration, 2006, 5(1):93-102
See also