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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 as one solid. For this Jet Engine Bracket the already prepared Design Space was imported.
Open the Optimization Tools to select the imported Geometry as the Design Space
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Create the material Steel Titanium 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 (116e3 MPa), Poisson ratio (0.26) and Density (4.48e-6 kg/mm3).
The Tension Strength is the maximum allowable stress for the material and is set to 1290 MPa.
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Name | Direction |
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Constraint 1 | x, y, z (=0) |
Constraint 2 | x, y, z (=0) |
Constraint 3 | x, y, z (=0) |
Constraint 4 | x, y, z (=0) |
Under Displacement Constraints a “clamped” constraint can be chosen, which locks translations in all three directions. On the left side of the Tool the relevant geometry choice can be selected. In this case surfaces are selected.
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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“Non-Design Space ) Thickness” 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.
Two Interfaces are created for the load application surfaces. 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 force application face and confirm the selection (MMB). When the Interface Thickness is equal or bigger than the Offset Distance, the inner offset (Non-Design Space) is t isn’t visualized but will be considered correctly in the optimisation.
Four Interfaces are created on the faces of the fixations. Therefore, an Interface Non-Design Space Thickness of 3 mm and a Machining Allowance of 1mm is entered. Now select the top plate and confirm the selection (MMB). 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 fixations and confirm the selection (MMB).
Step 5: Definition of Events (load cases)
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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
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You can go back to the model setup by clicking the Exit button in the right bottom corner.
Generative Design Results
You can always change the Strut Density, Stress Goal and Complexity to influence the results and try out different options
The Complexity can be increased for a higher resolution and more detailed result (increased calculation time!)
Coming Soon!
For more information have a look at the MSC Apex Generative Design project:
You might also be interested in these tutorials:
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