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Assignment 5-RADIOSS Interfaces & Study of Effect of Notches Challenge
OBJECTIVE TO CREATE MESH FOR THE GIVEN 'BUMPER ASSEMBLY' WITH THE SPECIFIED CONDITION. TO RUN THE GIVEN 'CRASH TUBE' MODEL EACH BY CHANGING CONDITIONS AND TO COMPARE THE SAME AFTER PLOTTING ENERGY AND FORCES. PROCEDURE HYPERMESH (OPTISTRUCT)>FILE>IMPORT>MODEL>'select as needed'>IMPORT. GEOM>TEMP…
JEFIN VARGHESE
updated on 31 Jan 2024
OBJECTIVE
- TO CREATE MESH FOR THE GIVEN 'BUMPER ASSEMBLY' WITH THE SPECIFIED CONDITION.
- TO RUN THE GIVEN 'CRASH TUBE' MODEL EACH BY CHANGING CONDITIONS AND TO COMPARE THE SAME AFTER PLOTTING ENERGY AND FORCES.
PROCEDURE
- HYPERMESH (OPTISTRUCT)>FILE>IMPORT>MODEL>'select as needed'>IMPORT.
- GEOM>TEMP NODES>NODES>DISPLAYED>CLEAR ALL>RETURN.
- GEOM>QUICK EDIT>'did geometry cleanup'>RETURN.
- 2D>AUTOMESH>SURFS>DISPLAYED>ELEMENT SIZE '6'>MESH>'edit as needed'>RETURN.
- 1D>CONNECTORS>SPOT/SEAM>CREATE>'select as needed'>CREATE>RETURN.
- TOOLS>REFLECT>ELEMENTS>DISPLAYED>ELEMENTS>DUPLICATE>BAR ELEMENTS: MAINTAIN ELEMENT CONNECTIVITY>'select axis and node as required'>REFLECT>RETURN.
- CASE 1
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
- CASE 2
- HYPERCRASH 'match versions'>FILE>IMPORT>RADIOSS>'past link'>TAB 'press'>OK.
- LOAD CASE>CONTACT INTERFACE>'double click the needed'>Inact '6'>SAVE>CLOSE.
- FILE>EXPORT>RADIOSS>'past link'>TAB 'press'>OK.
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
- CASE 3
- HYPERCRASH 'match versions'>FILE>IMPORT>RADIOSS>'past link'>TAB 'press'>OK.
- LOAD CASE>CONTACT INTERFACE>CREATE NEW>SLAVE LINE>'right click'>SELECT IN GRAPHICS>INCLUDE PICKED PARTS 'select needed'>OK.
- MASTER LINE>'right click'>SELECT IN GRAPHICS>INCLUDE PICKED PARTS 'select needed'>OK.
- Istf '4'>Igap '1000'>Idel '2'>Stmin '1'>Iform '2'>Gap '0.5'>Inacti '6'>SAVE>CLOSE.
- FILE>EXPORT>RADIOSS>'past link'>TAB 'press'>OK.
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
- CASE 4
- HYPERCRASH 'match versions'>FILE>IMPORT>RADIOSS>'past link'>TAB 'press'>OK.
- LOAD CASE>BOUNDARY CONDITION>DELETE>SAVE.
- FILE>EXPORT>RADIOSS>'past link'>TAB 'press'>OK.
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- GEOM>NODE EDIT>ALIGN NODE>'select as needed'>RETURN.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
- CASE 5
- HYPERCRASH 'match versions'>FILE>IMPORT>RADIOSS>'past link'>TAB 'press'>OK.
- LOAD CASE>BOUNDARY CONDITION>CREATE NEW>TRANSLATION/ROTATION 'select as needed'>Gnod_id>SELECT IN MODEL>'select as needed'>OK.
- FILE>EXPORT>RADIOSS>'past link'>TAB 'press'>OK.
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- TOOLS>TRANSLATE>NODES>'select as needed'>TRANSLATE+/->RETURN.
- DELETE>ELEMENTS>'select as needed'>DELETE ENTITY>RETURN.
- 2D>EDIT ELEMENTS>CREATE>'select as needed'>CREATE>RETURN.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
- CASE 6
- HYPERMESH (RADIOSSBLOCK)>FILE>IMPORT>SOLVER DECK>'select as needed'>IMPORT.
- TOOLS>TRANSLATE>NODES>'select as needed'>TRANSLATE+/->RETURN.
- ANALYSIS>RADIOSS>'rename as needed'>RADIOSS>RETURN.
- HYPERGRAPH>DATA FILE>'select T01 file'>X TYPE 'TIME'>Y TYPE 'GLOBAL VARIABLES/RIGID WALL'>'select further as needed'>APPLY.
- HYPERVIEW>LOAD MODEL AND RESULTS>'select h3d file'>APPLY>CONTOUR>RESULT TYPE :VON MISSES>AVERAGING METHOD :SIMPLE>APPLY.
GIVEN BUMPER PART WAS MESHED SUCESSFULLY AND REFLECTED TO THE OTHER SIDE FOR GETTING THE COMPLETE VIEW.
BOUNDARY CONDITIONS WERE CREATED FOR CASE 5 AND 6 AS THE MODEL WAS FLIPPING UPSIDE DOWN WITHOUT THE SAME.
SCREENSHOTS
- BUMPER ASSEMBLY MESH @Sample 1,2 and 3.
- CASE 1: (HYPERMESH) @Sample 4, (HYPERGRAPH) Sample 5, 6 and (HYPERVIEW) Sample 7.
- CASE 2: (HYPERCRASH) @Sample 8, (HYPERMESH) @Sample 9, (HYPERGRAPH) Sample 10, 11 and (HYPERVIEW) Sample 12.
- CASE 3: (HYPERCRASH) @Sample 13, (HYPERMESH) @Sample 14, (HYPERGRAPH) Sample 15, 16 and (HYPERVIEW) Sample 17.
- CASE 4: (HYPERCRASH) @Sample 18, (HYPERMESH) @Sample 19, (HYPERGRAPH) Sample 20, 21 and (HYPERVIEW) Sample 22.
- CASE 5: (HYPERCRASH) @Sample 23, (HYPERMESH) @Sample 24, (HYPERGRAPH) Sample 25, 26 and (HYPERVIEW) Sample 27.
- CASE 6: (HYPERMESH) @Sample 28, (HYPERGRAPH) Sample 29, 30 and (HYPERVIEW) Sample 31.
- HYPERVIEW SIMULATION GIF CASE WISE @C 1/2/3/4/5/6 Graphics.
RESULTS
- R-WALL FORCES, CONTACT FORCES, INTERNAL AND KINETIC ENERGY ARE COMPARED BELOW.
|
No. |
E% error |
Internal Energy |
Kinetic Energy |
R-Wall Forces |
Contact Energy |
|
Case 1 |
-3.8% |
0.4201E+05 |
593.6 |
1341 |
2034 |
|
Case 2 |
-3.8% |
0.4201E+05 |
593.6 |
1337 |
2030 |
|
Case 3 |
-3.8% |
0.4202E+05 |
580.4 |
1354 |
2000 |
|
Case 4 |
-2.8% |
0.4259E+05 |
556.4 |
1205 |
1326 |
|
Case 5 |
-2.7% |
0.4206E+05 |
803.1 |
1533 |
1654 |
|
Case 6 |
-2.4% |
0.4251E+05 |
525.9 |
1258 |
1298 |
- Inacti WAS ACTIVATED FOR CASE 2 TO REDUCE INITIAL PENETRATIONS. BY COMPARING THE ENERGY RESULTS (INTERNAL ENERGY AND CONTACT FORCES) FOR CASE 1 $ 2, NO INITIAL PENETRATIONS EXISTS, BOTH PLOTS SAME. (Sample 5 V.S Sample 10)
- INTERNAL ENERGIES HAVE INCREASED FOR CASE 4 AND CASE 6 SINCE THERE ARE NO NOTCHES AND IMPROPER NOTCH ADDITION OPPOSITELY. NOTCHES ABSORB THE INTERNAL ENERGIES THE MOST, WE CAN SEE LOW INTERNAL ENERGIES FOR ALL OTHER CASES EXCEPT CASE 4 AND 6. (Sample 20 V.S Sample 29)
- NOTCHES CREATE MORE RESISTANCE TO DEFORMATION HENCE MORE THE FORCE IS NEEDED TO APPLY FOR ELEMENT DEFORMATION, KINETIC ENERGY, CONTACT ENERGY AND RWALL FORCES ARE HIGH FOR CASE 5. (Sample 25 and Sample 26)
- RWALL FORCES WAS SEEN HIGHEST FOR CASE 5 BECAUSE OF THE PRESENCE OF NOTCHES, THE SAME WAS SEEN LOWEST FOR CASE 4 BECAUSE NOTCHES WERE ABSENT. CASE 5 RWALL WAS SIGNIFICANTLY REDUCED DUE TO IMPROPER NOTCH ADDITION OPPOSITELY.
- USING TYPE 7 INTERFACE WITH OR WITHOUT TYPE 11, ALMOST SAME RESULTS ARE OBTAINED. ALWAYS ITS GOOD TO DEFINE IN BOTH ASPECTS.
- DIFFERENT TYPES OF NOTCHES OVER DIFFERENT SEGMENTS WILL IMPACT SIMULATION RESULTS.
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