1D internal forces

The 1D internal forces command serves for displaying internal forces on selected 1D members. (not only on Beams, but also on Ribs, Tendons and Integration strips/members)

Usage

  1. Calculate a FEM analysis of the model
  2. Go to Tree > Results > Beams > 1D internal forces
  3. Set properties of the command to specify mainly:
    • selection of 1D members where the results are evaluated
    • load type from which the results are derived
    • specific result value from the available list to be visualized
  4. Click on [Refresh] action button to display the results

Note: To get general overview about how to work with Result service and its commands, see Results/Basics.

Convention of 1D internal forces

The convention is described in the picture below:

Properties

Category Property Description / Notes
Selections

Type of selection

All / Current / Advanced / Named Selection

Specifies on what members the results are displayed

See "Type of selection"

 
Filter

No / Cross-section / Material / WildCard / Layer / Type of beam

Specifies the filter of members on what the results are displayed

See "Filter"
Results in selection

All / Selected

Defines for which sections the results are displayed.

Selected is defined by :

Ends / Close to middle / Inputted

Result case Type of load

Load case / Combinations / Classes / Nonlinear Combinations/ / Mass combinations

Defines for what load the results are displayed.

See"Result case"

Rib

On / Off

 Activates possibility to display 1D internal forces not only on Beams, but also on " Rib in the slab"
Tendon

On / Off

 Activates possibility to display 1D internal forces not only on Beams, but also on " Parameters of the post-tensioned internal tendon"

Integration strip / member

On / Off

Activate possibility to display 1D internal forces not only on Beams, but also on "Integration strips" / "Integration member"
Prestressing Type of forces

Primary forces / Secondary forces / Total resultants

For "Result case" selected on " Defining the load case parameters" with type prestress it defines for which forces the results are displayed.

"Primary / Secondary forces"

Extreme 1D Extreme 1D

No / Section / local / Cross-section / Design group / Member / Global

Defines the position where extremes of result value are evaluated.

note for "extreme no" option: If selected combination or class consist of too many linear combinations and thus it is not possible to display the results in full - conservative method that only displays results for linear combinations causing an extreme response of the structure is used instead.

Values

N / V_y / V_z / M_x / M_y / M_z/ V_r / Components

See table Values below.

Components : possibility to choose more than one value and display them together in 3D window. Only selected values will be displayed in result tables.
Interval

On / Off

Activation of interval of values for displaying in 3D window and in result tables.

Minimum [ ] It is available only if Interval functionality is ON. User can define minimal value of interval. This item is unique for every type of unit used in Values.
Maximum [ ] It is available only if Interval functionality is ON. User can define maximal value of interval. This item is unique for every type of unit used in Values.
Coordinate system

Principal / Member

Sets a coordination system which is used as referenced for displaying the results.

Output settings Print combination key

On / Off

  
Display info about used interval

On / Off

 It is possible to display or not display in header of result tables information about applied intervals.
Drawing Setup 1D   " Drawing setup 1D"
Errors, warnings and notes settings   "Errors, warnings and notes settings"

Values

Value Description Notes
N

normal force

1) As default, the internal forces refer to the local axes of the individual 1D member

2) The local axes can be displayed by selecting the corresponding option in the View parameters settings.
Vy shear force in direction of local axis y
Vz shear force in direction of local axis z
Mx bending moment in direction of local axis x
My bending moment in direction of local axis y
Mz bending moment in direction of local axis z
Vr axial force in direction of local axis y
Components possibility to choose more than one value and display them together in 3D window. Only selected values will be displayed in result tables.