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.

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

Notes