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

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