Event specific stress constraints realize the setup of different optimization targets for each Event (load case). The following stress goal settings are possible:
An overall stress goal can be set for the optimization,
for every event a specific stress constraint can be set,
or just one (two, …) event specific stress constraints can be set and the other events consider the overall stress goal.
This way different prioritizations of events can be realized e.g. to integrate overload events which should not be taken into considerations such as the normal loads.
The left image shows the starting point of this example. The part is loaded with two events that have the same stress goals and the same forces. In the second image, the stress target of one event is halved and the forces are doubled. Because of this change one half of the structure is considerably thicker as the other side of the structure - because higher forces and a considerably lower stress goal is applied. The third image shows the result when in one event the forces as well as the stresses are doubled. As expected, this has no influence on the structure and it is the same structure as in the first one. The duplication of both the forces and the stress cancel each other out.