struct.force.nodal.local

Syntax

l := struct.force.nodal.local(p)

struct.force.nodal.local(p) := l

Note

This function does not automatically return scaled nodal forces when spacing is used in FLAC2D. see the 2D/3D Equivalence - Property Scaling (Spacing).

Get/set the generalized nodal forces (expressed in the element local coordinate system) acting on the element. Each generalized force consists of a force and moment that are ordered \(\{ f_x, f_y, f_z, m_x, m_y, m_z \}\). The nodal forces are returned as a list of 6x1 matrices, with the length of the list equal to the number of element nodes.

You may access a specific matrix in the list, or a specific element of a matrix, by using repeated indexing as follows.

; Second node force matrix
local m = struct.force.nodal.local(pnt)(2)
; Fourth component of second node force matrix
local m = struct.force.nodal.local(pnt)(2)(4)

This can also be done on assignment to only change a single matrix or a single component of a matrix.

; Update second node force matrix. Either 1x6 or 6x1 matrix will work.
struct.force.nodal.local(pnt)(2) = matrix(6,1,1,2,3,4,5,6)
; Update fourth component of second node force matrix
struct.force.nodal.local(pnt)(2)(4) = 5.0

Returns:

l - List of 6x1 matrices containing the generalized nodal forces

Accepts:

l - List of 6x1 matrices containing the generalized nodal forces

Arguments:

p - pointer to a structural element