Relevant data for this tutorial:
The program starts and you can directly create your optimization model
You can either create the geometry directly in Apex GenDes or import already existing files. You can import .xb, .step, .sldprt and .stl files into the program.
Import/create the design space including the nondesign spaces in MSC Apex Generativ Design 2020 as one solid. For this Bookshelf the already prepared design space was imported.
Create the material in the Materials editor and assign a Material to the design space
The specific values needed are the Young's Modulus (210e3), poisson ratio (0.3) and density (7.8e-6)
Nondesign spaces have to be selected using the Optimization Tools. In this case the three screw holes are beeing used and a nondesign space with an offset of 2 mm is created for each.
Go to the Loads & Boundary Condition Tool to enter the loads and fixations. Displacements, Forces, Moments, Gravity and Pressure Loads can be applied using different selection options.
In this case one force is defined (on the upper surface):
Name | Force/Moment/Pressure/Gravity | Direction | Value in N |
|---|---|---|---|
Force - Moment 1 | Force | z | -1000 |
Three constraints are created and attached on the Non Design Regions:
Name | Direction |
|---|---|
Constraint 1 | x, y, z (=0) |
Constraint 2 | x, y, z (=0) |
Constraint 3 | x, y, z (=0) |
The next steps are defined in the Studies area.
All boundary conditions must be assigned to the specific load cases, which are defined as Events. The number of Events can be changed by adding/deleting Events to the Meshless Generative Design Scenario. The assignment of the boundarie conditions to the Events can be made in the Loads & Constrains Window. The already created loads and constraints that concern the design space are listed in this window and can be activated for each Event individually.
Active in Event1: Force-Moment 1, Constraint 1, Constraint 2 and Constraint 3
The optimization parameters are selected in the Studies Area as well.
Select the Thickness: Normal
Select the Calculation Type: Optimizing
Enter the Maximum Stress: 2 MPa
Don’t forget to save the project!
If all data are correct, the optimization can be started and tracked in the Post Processing.
All result iterations are displayed as soon as they are available. Furtheremore you are able to stop the optimization in this selection area. A restart however is not directly possible.
The optimization is finished after 64 iterations (Calculation Type: Optimizing).
You can always change the Design Type, Maximum Stress and Complexity to influence the results and try out different options
The Complexity can be increased for a higher resolution (increased calculation time!)
The Design Type influences the strucures which are formed during optimization
The optimizations below show the influence of the Design Type when nothing else is changed.
Design Type: Normal
Design Type: Filigree
Design Type: Massive → one Fixation was sorted out by the optimization algorithm because it was not necessary to reach the goal of the optimization!
The legend can be influenced in different ways. You can add and reduce the steps, enlargen different steps and set new minimum and maximum values.
Guidance coming soon!
The legend can be influenced in different ways. You can add and reduce the steps, enlargen different steps and set new minimum and maximum values.
Guidance coming soon!
More coming soon!