{{ post.title }} 글 편집 Author {{ post.author.name }} Posted on

Guidelines for preceding tutorial

You should perform [Base Model Creation Tutorial] before this tutorial. 
The base model created by this tutorial can be used in   [G-Modeling Tutorial - Rigid ↔ RFlex] as well.
Go to Base Model Creation Tutorial

Step 01 - Meshing

[Steps]

Until [G-Modeling Tutorial - Rigid ↔ RFlex], user has confirmed the deflection effect of Pushrod, and then improve design of Pushrod using design changing. Next, flexibility of RockerArm will be simulated as FFLEX.

1. Run <G-Manager>
   
2. Select RockerArm body in GUI
3. Select <FFlex> as Target
4. Choose <Mesh>
5. Click <Execute>.
6. Click <Mesh>, with the options
• Solid4(Tetra4)
• Max & Mix Size = 1.5 & 0.1
• Check On <Include Assist Modeling>
7. Click <Mesh> button
8. Click <Exit> (FFlex Edit - Exit)

Step 02 - FFLEX MFBD Modeling

[Steps]

1. Run <Dyn/Kin simulation>
2. See the Animation result
3. Click the <Contour> Icon
4. Select <Stress> & <SMISES(Von-mises Stress)>
5. Click <Calculation> Button
6. And, change Type to the <User Defined> & Input the Max as '1000'
7. Check 'Show Min/Max' option
8. Click <Apply> button
9. See the Stress Distribution of RockerArm in Contour Animation result in GUI
10. Max. Stress is always occurred in contact area. This can be occurred by contact force concentration to the node. That is reasonable result!
11. However, over 1000 MPa Stress is occurred in the Arm of RockerArm. It means this area can be fragile during operating

Step 03 – Swap FFLEX to New FFLEX

[Steps]

At Step 02, user confirmed RockArm flexibility, so if user wants to improve that point by design change. User can easily swap the NEW FFLEX body with new design using G-Manager Swap function.

1. Run <G-Mananger>, click FFLEX RockerArm.
   
2. In dialog, select Target as <FFlex>.
3. Define the Mesh Data file path using 'FFLEX_RockerArm_NewDesign.bdf' file.
4. Run <Execute>.
5. Then, open the property dialog of GeoContace2, and change the Action Geometry to 'RockerArm_FE.PatchSet1' (Because, when it is changed, the default patch is set as whole surface of FFlex body. So, user must to change it)

If user doesn’t not have the new FFLEX data file, you can repeat Step 08 & 09 with new CAD geometry data

Step 04 – Compare the Results

[Steps]

1. Open the Properties dialog of FFlex body, and switch off the “Use Force Connector”
2. Click OK button
3. Run Dyn/Kin simulation
4. See the Animation result
5. Click the Contour Icon
6. Select “Stress” & “SMISES(Von-mises Stress)“
7. Click “Calculation” Button
8. And, change the “User Defined” Type & Input the Max as “1000”
9. Check “Show Min/Max” option
10. Apply
11. See the Stress Distribution of the New RockerArm in Contour Animation result in GUI (Stress concentration of NEW FFLEX body is less than previous design.)