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Import/create the Design Space including the Interfaces (Non-Design Spaces) in MSC Apex Generative Design as one solid. For this Bookshelf the already prepared Design Space was imported.
Open the Design Space Tool in the Optimization Tools to select the imported Geometry as the Design Space
. You can delete the empty part “Bookshelf” because it is no longer needed.
Create the material in the Materials editor and assign it to the Design Space. In this case the material behaviour is Isotropic.
The specific values needed are the Young's Modulus (192372 MPa), Poisson ratio (0.3) and Density (7.97e-6 kg/mm3).
The Tension Strength is the maximum allowable stress for the material and is set to 320 MPa.
Step 3: Definition of boundary conditions
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Step 4: Interface Creation
Interfaces have to be created for every functional surface - so every surface where a boundary condition is applied to. With this Tool an offset to the inside with the input
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“Non-Design Space
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Thickness” and an offset to the outside with the input
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“Machining Allowance” is created. The Offset Distance is expanding the Interface to the set value to create material on front faces.
Three Interfaces are created to insert screws and fixate the Bookshelf to the wall. Therefore, an Interface Non-Design Space Thickness of 2 mm and a Machining Allowance of 1 mm is entered. Because not only the inner faces touching the screw but also the front and back face are supposed to contain material and have sharp, functional faces, an Offset Distance of 3 mm is entered. Now select the inner surfaces of the fixation and confirm the selection (MMB).
One Interface is created on the top plate to use this as the book storage. Therefore, an Interface Non-Design Space Thickness of 1mm and a Machining Allowance of 1mm is entered. Now select the top plate and confirm the selection (MMB).
Step 5: Definition of Events (load cases)
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Active in Event1: Force-Moment 1, Constraint 1, Constraint 2 and Constraint 13
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Step 6: Definition of optimisation parameters
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Inside the Post Processing the von Mises stress and the displacements are visible for all iterations and for every Event
The Scale can be influenced individually
The mass of each iteration can be visualized with a diagram
You can go back to the model setup by clicking the Exit button in the right bottom corner.
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The optimisations below show the influence of the Strut Density when nothing else is changed.
Strut Density: Medium
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Strut Density: Dense
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Strut Density: SparseThe whole MSC Apex Generative Design project with all results can be downloaded here: Coming Soon!
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