nodeDisp

nodeDisp#

Model.nodeDisp(tag, dof=None)#

Return the displacement at a specified node.

Parameters:

  • tag (integer) – The tag of the Node whose displacements are sought.

  • dof (integer) – Optional: specific degree of freedom at the node (between 1 and Model.ndf, inclusive).

Returns:

A list of Model.ndf displacement values at the node when dof=None. When dof is supplied, the result is a float.

After an analysis step, the displacement at each node is updated in the domain. nodeDisp returns the current displacement (and rotation, when applicable) for the specified node and optional DOF. Returned values are in the length and angle units of the user’s chosen system (see Units).

The components are ordered as follows for various combinations of dimension (Model.ndm) and degrees of freedom (Model.ndf):

ndm

ndf

Order of components

1

1

u1

2

2

u1, u2

3

3

u1, u2, u3

2

3

u1, u2, r3

3

6

u1, u2, u3, r1, r2, r3

Example#

The following example is used to set the variable disp1 to the nodal displacement at node given by the variable tag in the 1 degree-of-freedom direction.

  1. Tcl Code

    set disp1 [nodeDisp $tag 1]

  2. Python Code

    u1 = model.nodeDisp(tag,1)

Code developed by: fmk