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  • ANSYS 12 - Crank - Step 2

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Step 2: Geometry

In the Crank cell, right click on Geometry, and click New Geometry...

 
At this point, a new window, ANSYS Design Modeler will be opened. You will be asked to select desired length unit. Use the default meter unit and click OK.

Creating a Sketch

Like any other common CAD modeling practice, we start by creating a sketch.

Start by creating a sketch on the XYPlane. Under Tree Outline, select XYPlane, then click on Sketching next to Modeling tab. This will bring up the Sketching Toolboxes.

On the right, there is a Graphic window. At the lower right hand corner of the Graphic window, click on the +Z axis to have a normal look of the XY Plane.

Select Rectangle. Create a rough Rectangle from starting from the origin in the positive XY direction (Make sure that you see a letter P at the origin before you start dragging the rectangle. The letter P at the origin means the geometry is constrained at the origin.

You should have something like this:

Note: You do not have to worry about geometry for now, we can dimension them properly in the later step.

Modify the Sketch

Since we have a heated section in the middle of the pipe, we need to split the geometry appropriately. Click Modify tab and select Split. Roughly select four points on the top and bottom of the rectangle where there will be heated section.

Dimensions and Constraints

Now we will specify the appropriate dimensions and constraints. Below is the summary of geometry of the pipe:

Radius: 0.0294 m
Length: 6.096 m
Heated Section: 1.83 m - 4.27 m

Select Dimensions tab, use the default dimensioning tools. Dimension the geometry as shown:

Under Details View on the lower left corner, input the value for dimension appropriately.
V1: 0.0294 m
H2: 1.83 m
H3: 4.27 m
H4: 6.096 m

Now we can constraint the lower rectangle with the top of the rectangle which has been properly dimensioned. Click Constraints tab, select Equal Length. Click the appropriate top and bottom edge and set them to be of equal length.

At this point, you should see something like this for your sketch:

Now that we have the sketch done,

Go to Step 2: Geometry

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