Using reaction forces and UDLs in AutoDefaults and AutoConnection
You can set reaction forces for AutoConnection and AutoDefaults in the user-defined attributes of a part, and for AutoDefaults also on the Design tab in the connection dialog box.
When you use reaction forces in a rule and AutoDefaults is activated, Tekla Structures first searches for reaction forces in the corresponding connection’s properties. If the properties do not contain reaction forces, Tekla Structures searches the user-defined attributes of the secondary part of the connection. If Tekla Structures does not find forces there, you cannot use reaction force rules.
Shear force calculation
If you have not given any reaction force values, shear force is calculated using the UDL (uniformly distributed load) shear force routine. The UDL calculation is mainly intended for use with imperial units. It uses the yield stress value, profile dimensions, and UDL percentage to calculate the maximum shear force allowed.
- Yield stress is defined in the material catalog.
- Profile dimensions come from the profile catalog.
- UDL percentage is taken either from the connection dialog box or from an advanced option.
Tekla Structures compares the result with the shear force rule in AutoDefaults.
To use UDLs for AutoConnection and AutoDefaults:
|Use UDL for AutoConnection||
|Use UDL for AutoDefaults||