**vspring

Description

This boundary condition applies a force via springs attached to a given bset.

Syntax

**vspring \(~\,~\,\) bset_name1 K1 (dir1) \(~\,~\,\) … \(~\,~\,\) [bset_nameN KN (dirN)]

bset_name

is the name of a valid boundary set (bset) to which the springs are attached.

K

is the spring stiffness (can be either positive or negative).

dir

is the direction of springs.

Example

This example can be found in $Z7PATH/TESTS/Static_test/INP/vspring.inp

***bc
 **impose_nodal_dof
   bottom U2 0.0
   axis   U1 0.0
 **vspring
   top   100.  (0. 1.)
   side  -10.  (1. 0.)