Page Comparison

...

Relevant data for this tutorial:

Step 1: Start MSC Apex Generative Design

...

Creation of local coordinate systems to apply forces

For this model one local coordinate system needs to be created to easily apply the corresponding force to the model.
By opening the Coordinate Tools a local coordinate system is created by entering the three orientations (alpha = 75°, beta = 90°, gamma = 315°) and placing it on the front plane (coordinate system 2).

Coordinate system 1 is already created and is the Principal Coordinate System.

...

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.

To apply the forces the Force Moment Tool from the Loads & Boundary Condition Tools is needed. By disabling the Flash (selection of the execution mode for the tool) on the top left corner of the Tool, multiple faces can be selected simultaneously. Select the Faces as shown in the pictures below for each load.Three

Loads & Boundary Condition for Event 1

For the first Event two remote loads are created (Force - Moment 1 , & Force - Moment 2 and Force - Moment 3) on the shown surfaces with the given values in the tables.

Force 1 is applied on the left, big cylindrical surface:

...

...

Force 2 is applied on the other two surfaces. The point of application of this remote Force can set up by determining a point regarding the global coordinate system.big cylindrical surface:

...

Force - Moment 3 is applied on the same surfaces like the first Force. This new Load is referring to the local coordinate system created earlier.

...

For the first Event one Displacement constraints at the middle cylinder is created:

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 the surface of the middle cylinder is selected to attach the constraints as shown in the picture below.

...

Loads & Boundary Condition for Event 2

For Event 2 four loads and one displacement constraint on each side are needed.

...

Six Constraints at the bottom of the structure are created:

...

And the same clamping loads (Load 7, 8, 9, 10) are also applied on the other side.

...

On both outer bigger cylinders clamped displacement constraints are applied:

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 the inner surfaces are selected to attach the constraints as shown in the picture below.

...

Image Added

Step 4: Interface Creation

...

All surfaces on which a boundary condition is applied can be selected directly as an interface with the “Select Faces from Loads and Boundary Conditions” button. The Boundary Condition surfaces will be highlighted and can be selected/deselected. With “Apply” the Non-Design Space Thickness, Machining Allowance and if available Offset Distance values will be applied to the selected surfaces.

• In this case a for the outer, bigger cylinders and the middle cylinder inclusive the front faces are manually selected. A Non-Design Space Thickness of 3 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.
  

  Image Removed

Note: the Interface Offset (usually displayed in red) is not visualized due to a limitation. The correct value will be considered in the optimisation.

...

Step 5: Definition of load cases

...