With the Loads & Boundary Condition Tools all Boundary Conditions can be created which are required for the optimisation. It can be chosen between Displacement Constraints and Structural Loads (directly or remotely applied).
Displacement Constraints:
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Different displacement constraint types can be chosen. The “clamped” constraint locks the translation in all three directions. With the “general” fixation the constrained degrees of freedom can be chosen manually and can be named individually in the name sector for a better overview.
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Constraints can be applied on cells, surfaces, edges and points which automatically become a Non-Design Space. To apply a constraint to a cell, the cell has to be created beforehand. This can be done using the split tool or with a Boolean operation. What cells are, how they are created and defined is mentioned here.
Force-Moment:
Forces and moments can be created by component notation or as a resulting load. In the name sector every force/moment can be named individually.
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To apply a constraint to a cell, the cell must be created first. This can be done using the split tool or with a Boolean operation.What cells are and how they are created and defined is mentioned here.
Gravity (Acceleration):
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An acceleration can be created by defining the value with several g’s or a magnitude. As the direction for the acceleration a direction of the global coordinate can be chosen. If the acceleration doesn’t correspond with the global coordinate system, it can be created as a vector. More than one acceleration can be created per optimisation however only one acceleration per load case makes sense.
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Attention: If only an acceleration and no other load is defined in the same load case, the optimisation will get rid of the whole material iterative. The acceleration force is directly dependent on the volume of the Design Space. As the Design Space is reduced so is the acceleration force until no material is left.
Pressure Load:
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Pressure loads can be applied only on surfaces. It doesn’t matter if the surface is plane or not. The Pressure magnitude is the only value which is required. The chosen surface will automatically become a Non-Design Space. If a pressure load is applied on a surface, no other Boundary Conditions can be applied on the same or any overlapping surfaces.
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