P. Beam End Forces table
The units for the data are defined in the Display Options dialog > Force Units sheet as the Force unit for the FX, FY and FZ results and Moment for the MX, MY and MZ results. Note that it is possible to select an alternative unit for forces or moments by right-clicking over a value and selecting the unit from the options in the pop-up menu ‘Change Unit for this column’
This table, along with the Beam Force Detail table is opened when the Beam Results page is selected. The table has three tabs which allows the data to be displayed thus:
Opens when the Beam Results page is selected.
All tab
The results for all load cases and beams selected in the Results Setup dialog are displayed. Each result being the force on the node as applied to the beam.
Summary tab
This tab presents maximum and minimum End Force results for each degree of freedom. All specified members and all load cases are considered.
In order to account for the fact that the direction of the forces is inverted at the far end of the beam to induce an equivalent force on the beam, the signs of the force at the far end of the beam are first inverted and the maximum/minimum values are then determined.
For example consider a beams which have been loaded in two load cases such that the first is in compression by 10kN and in the second is in tension by 5kN. This would be reported in the All results tab thus:
Beam | L/C | Node | Fx (kN) | Fy (kN) | Fz (kN) | Mx (kNm) | My (kNm) | Mz (kNm) |
---|---|---|---|---|---|---|---|---|
1 | 1 Compression | 1 | 10.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
2 | -10.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | ||
2 Tension | 1 | -5.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
2 | 5.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
As the values of the far end results are inverted, the value of Max FX reports the maximum compression and Min FX reports the maximum tension thus:
Beam | L/C | Node | Fx kN | Fy kN | Fz kN | Mx kip-in | My kip-in | Mz kip-in | |
---|---|---|---|---|---|---|---|---|---|
Max Fx | 1 | 1 Compression | 1 | 10.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
Min Fx | 1 | 2 Tension | 1 | -5.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
Envelope tab
This tab reports the details for each beam which load case provides the most positive and most negative effect for each degree of freedom, (i.e. 8 results per beam).
This is displayed on 4 rows,
- On the start node:
- The most positive effect in each degree of freedom.
- The load case that produce the most positive effect.
- The most negative effect in each degree of freedom.
- The load case that produce the most negative effect.
- On the far node:
- The most positive effect in each degree of freedom.
- The load case that produce the most positive effect.
- The most negative effect in each degree of freedom.
- The load case that produce the most negative effect.
If there is no load case that produces a positive or negative effect, that is indicated
with -
as the load case.