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Goal of this tutorial
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Import/create the Design Space including the Non-Design Spaces in MSC Apex Generative Design. For this Pedal the already prepared Design Space and Non-Design Spaces were imported.
The CAD-file includes several solids. Thus, only one solid is supported for an optimisation, with a Boolean operation the solids can be merged to one. Activate Merge Solids as Cells to create partitions which can be used for Non-Design Spaces.
Open the Design Space Tool in the Optimization Tools to select the imported Geometry as the Design Space. Activate the Symmetric Design Constraint and select the YZ plane to set up the symmetric optimisation.
Non-Design Spaces have to be selected using the Non-Design Spaces Tools. In this case all already existing cells (partitions) can be selected.
Machining Allowances should be applied to every functional surface. Adjacent Faces should be selected at once, to create one continuous geometry. Therefore, the automatic execution mode can be turned off.
In this case a value of 1 mm was chosen and all functional faces are selected as shown in the pictures. How much Machining Allowance is necessary, depends on the dimensions of the part and the manufacturing process/machine.
For the next steps, the Non-Design Spaces as well as the Machining Allowances are hidden.
Create the material Steel 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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Name | Direction |
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Constraint 1 | x, y, z (=0) |
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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 “Interface Thickness”(Non-Design Space) and an offset to the outside with the input “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 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)
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One Interface is created on the top plate to use this as the book storage. Therefore, an Interface Thickness of 1mm and a Machining Allowance of 1mm is entered. Now select the top plate and confirm the selection (MMB).
Step 4: Definition of Events (load cases)
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