On the workbench toolbar, click (Fastener resultant forces) > Bolt/nut resultant forces.
The Bolt/nut forces dialog will open and display a
table of resultant forces for tightened or not tightened bolts and
nuts.
Click the desired tab to display either Bolts or
Nuts.
Select any column header to sort the table by that header.
Select any row to display a forces summary.
Note: When the resultant axial force of the bolt/nut
deviates by over 10%, the following occurs:
In the Project Tree, a warning icon appears
next to the Results branch. Right-click on the
Results and select
Warnings to view.
Figure 1.
In the Bolt/Nut
forces dialog, nuts with significant deviation are marked in
red and deviation from the target is listed.
Figure 2.
Evaluated Forces
Description of which bolt/nut forces are evaluated.
Bolts
For bolts, the following forces are evaluated in the cross-section at the base of the
bolt head in location #1:
Axial force
Shearing force
Bending movement
as well as the corresponding nuts at location #2:
Axial force
Thread shear force
Bending movement (about centroid of bolt threads.
Figure 3.
For blind bolts, the second group of forces are evaluated in the centroid of the
threads at the bottom of the bolt.
Nuts
In nut tightening (where a corresponding bolt is not present), the following forces
are evaluated in the nut threads:
Thread shear force
Bending movement (about centroid of bolt threads)
Thread shear force is the total force that acts on the nut threads along nut axis.
This force defines the main failure mode of threads through shear and can be used
for threads sizing. In particular case of a bolt which can freely slide in the
placement holes and is tightened by a nut, the force will be same as axial force on
the bolt.
(Fastener resultant forces) > Bolt/nut resultant forces.
The Bolt/nut forces dialog will open and display a table of resultant forces for tightened or not tightened bolts and nuts.
