Assignment 5-RADIOSS Interfaces & Study of Effect of Notches Challenge

                          Assignment 5-RADIOSS Interfaces & Study of Effect of Notches Challenge

AIM  

• Create the mesh for bumper assembly,mesh size should be 6mm. 

1. Run the crash tube model as it is.
2. Change the Inacti=6 and run.
3. Create the type 11 contact and run.
4. Remove both notches and remove boundary condition on rigid body node then run.
5. Create a new notch in the middle,select the whole section and run
6. Create a new notch with nodes only from opposing 2 faces and run

procedure

• we have to mesh the bumper assembly with 6 mm
• import the model to the graphic area 
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• and then go to the 2d- auto mesh -select the surface
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• and give the mesh for the selected components 
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• after that, we have to connect the components by using connectors
• by using weld and rbe2 we give the connections
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case 1

• Run the crash tube model as it is.
• create the folder with the given file 
• import the file to the graphic area 
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• go to analysis - save as the same folder 
• and select the radioss
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• we have a solution like this
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• and then we have to crack the graph for this case 1 
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•                                                        hourglass energy

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• total resultant force
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• kinetic energy
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• internal energy

case 2  

• Change the Inacti=6 and run.
• as same as before we have to import the model to graphic area and then 
• go to inter - type 7 - inactive 6
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• and then run the model now we may find diff time and something
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CASE 3

• Create the type 11 contact and run.
• IMPORT THE MODEL INTO THE GRAPHIC AREA
• now this time we have to create the type 11 and run the model
• go to solver - create - interface -type11 
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• after that as usual go to
• analysis - radioss - and run the model 
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• and we have component like this 
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CASE 4 

• Remove both notches  and remove boundary condition on rigid body node then run.
• now we have to remove the notches in all areas 
• now import the same model 
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• now we have to create the ruled 
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• now the model is ready and then we have to analysis the model
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CASE 5

• Create a new notch in the middle ,select the whole section and run.
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• now we have to analysis the model as sameas before
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CASE 6 

• Create a new notch with nodes only from opposing 2 faces and run.
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• after creating this kind of notches now we have to analysis the model
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RESULTS

• cases no               total.no.of.              energy error                   mass error              simulation time                 max.von.misses
•                                    cycles                                                                                                                                               stress
•  1                                83527                    -3.8%                              0%                               61.33                                   0.6949

•  2                                83469                    -3.8%                              0%                               60.30                                   0.6953
•  3                                85294                    -4.0%                              0%                               69.72                                   0.6441
• 4                                 77306                    -3.0%                              0%                               54.35                                   0.6533
• 5                                 82015                    -4.2%                              0%                               58.94                                   0.6280
• 6                                 79862                    -2.9%                              0%                               57.00                                   0.6560

• by this projects we studied about type 7 and type 11 
• and their working method
• effects of notches 
• what if notches located in diff places and how many notches may change the results are studied