Bar Displacement

Select the Displacements tab from the Bar Value Selection dialog to select bar replacement parameters for presentation.

The following parameters may be defined in the results type field.

• Bar deflections (with respect to the chord of a displaced position of a bar).
• Maximum deflections. Enabling Position displays the point coordinates of the extreme value.
• Bar displacements (in the local system of the initial bar position).
• Drift ratio (dr/h) - ratio: difference of the member ends displacements to the member length (U1-U2) / L: in the global directions X, Y, total displacements on the XY plane and in the local member directions y, z

  total displacements on yz plane:

  in the global member system:

  dX = (UX1-UX2) / L

  dY = (UY1-UY2) / L

  dXY = sqrt((UX1-UX2)^2 + (UY1-UY2)^2) / L

  in the local member system:

  dy = (uy1-uy2) / L

  dz = (uz1-uz2) / L

  dyz = sqrt((uy1-uy2)^2+(uz1-uz2)^2) / L.

In the Components field you can select the following bar displacement or deflection to be displayed.

• UX - adds a table column to display displacements in the X-axis direction of the local bar coordinate system
• UY - adds a table column to display displacements/deflections in the Y-axis direction of the local bar coordinate system
• UZ - adds a table column to display displacements/deflections in the Z-axis direction of the local bar coordinate system.

The total resultant displacement in the local system and whose value equals the root of the sum of squares of the displacements UX, UY, UZ can be selected.

Depending on the selection (deflection results or bar displacements), the total displacement U is given with respect to the initial bar position (U) or the chord of the displaced bar (Uf).

Displacements in the global system are presented in the Nodal Displacements table.