X.H.3 Distribution on a group of connections
The equations developed in section X.H.2 allow the definition of the different steps involved in bolt
group redistribution of connection loads. We summarizes these steps below:
-
1.
- Bolt group center of gravity is calculated using (X.H.1).
-
2.
- This allows to calculate connection locations in a new coordinate system with origin on
this center of gravity using expression (X.H.2)
-
3.
- The bolt group global stiffnesses
and
are calculated with expressions (X.H.11) and (X.H.12) respectively.
-
4.
- The
compliance matrix in (X.H.13) can then be calculated. Let us remark that so far, the
calculations do not depend on connection loads. This means that they can be performed
only once before the actual post-processing of FEM results.
-
5.
- For a given load case, connection loads
and
can be extracted from the soler result file.
-
6.
- Bolt group global forces and moments are then calculated with (X.H.3) and (X.H.4).
-
7.
- Expression (X.H.13) is used to calculated bolt group global translational and rotational
deformation.
-
8.
- Connection forces and moments are then calculated with expressions (X.H.7) and
(X.H.8).