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Problem Specification
1. Pre-analysis
*2. Geometry*
3. Mesh
4. Setup (Physics)
5. Solution
6. Results
7. Verification and Validation
Exercises
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h2. Step 2: Geometry

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The Geometry of the Tertiary Truss is the most complicated part of the design process.  Many hours were spent creating the Solidworks geometry for the truss. This requires many hours and practice in Engineering Design. However, this tutorial focuses on properly analyzing the structure, not creating it from scratch, so we will provide the created geometry.

Click here to download the Solidworks composite .zip.


Unzip the folder, and open up ANSYS.  Use the import button to open up the file "Truss K_SF_2.5_surf_Flex". (Remember to select "geometry file" from the drop down menu.)  This assembly contains all the parts listed in this folder: do not separate the assembly from the parts folder.

After opening and generating the Solidworks import, you should see the entire geometry has been detailed in the window.  You should take this time to familiarize yourself with the structure.

There should be 2 part groups: the Truss K-1, and the Tertiary Subframe Surface.

 *Truss*
!Truss.PNG|thumbnail,border=1,height=200!

*Subframe*
!Subframe.PNG|thumbnail,border=1,height=200!

The remaining Flexure mounts and Rigid mount pad should remain separate entities.


h2. Line Body Truss

If we were to directly evaluate the imported geometry, ANSYS would consider the Truss as solid body objects, and generate a highly complex mesh on each of the Truss members.  This is wasted computational time.  Each of the Truss members is a simple beam, and can be evaluated using beam theory.  In order to tell ANSYS to compute it as such, we need to convert these members into line bodies and assign them a cross section.




*Go to Step 3: Mesh*
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