With the Loads & Boundary Condition Tools all Boundary Conditions can be created which are required for the optimization. It can be chosen between Displacement Constraints and Structural Loads.
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The orientation of the constraints can be influenced directly during the creation process by adding angles to the global coordinate system. Alternatively, the constraints can refer to a prior defined local coordinate system Local Coordinate System.
Constraints can be applied on cells, surfaces, edges and points which automatically become a Nondesign 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.
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The force/moment can be applied on cells, surfaces, edges and points which automatically become a Nondesign space. We always work with cells as load/constraint application point. The image below shows that with nondesign spaces on the left the functional areas that are important for the post processing are completely available. On the right side only the surfaces were used as load/constraint application points and no post processing after additive manufacturing is possible.
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The acceleration only affects the design Design space and doesn’t need to be applied on a cell or surface!
Attention: If only an acceleration and no other load is defined in the same load case, the optimization will get rid of the whole material iterative. The acceleration force is directly dependent on the volume of the design Design space. As the design Design space is reduced so is the acceleration force until no material is left.
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