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 $node1 $node2 $node3 $node4 $E $G
$rho $R $alphaN $alphaT
eleTag
|
unique element object tag |
\(node1 ..\)node3 |
4 end nodes |
E
|
Young’s Modulus of element material |
G
|
Shear Modulus of element material |
rho
|
Mass Density of element material |
R
|
distance from the scattered wave source to the boundary |
alphaN
|
correction parameter in the normal direction |
alphaT
|
correction parameter in the tangential direction |
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
Code Developed by: Quan Gu, Yichao Gao and Zhijian Qiu