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Assignment 4-RADIOSS Material Laws Challenge

KKarthikeyan Dhamodaran31 May 2022

Assignment-4

Aim:

1)Run simulation with FAILURE_JOHNSON_0000.rad file without any changes.

2) Import the file “Law2_epsmax_failure_0000.rad” and perform the simulation with failure plastic strain (EPS_p_max) and fail_Johson card enabled.

  • Changes to be made in /FAIL/JOHNSON card:
  • ifail_sh= 1
  • Dadv= 1
  • Ixfem= 1

3) Import file “Law2_epsmax_crack” and perform the simulation by removing the fail_Johnson failure card.

4) Import file“Law2_epsmax_nofail” and perform the simulation by removing both the failure plastic strain (EPS_p_max) and the fail_Jhonson failure card.

5) Import file “Law2_epsmax_nofail” and perform the simulation by changing the material card to Law 1. Keep the same value rho=0.0027, E=71000.0, and nu=0.33 values.

6) Import file named “Law2_epsmax_failure” and perform the simulation with the law 36 material card

7) import the Law27_0000.rad file and perform the simulation with the law 27 material card. Use the recommended shell properties.

Case1:

Failure card :Failure_JOHNSON_1 which is enabled on following settings.

Ifailsh=2,Dadv= default,Ixfem= default

Failure card settings:

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

49371 5.009 0.1011E-03 SHELL 159 0.8% 0.2730E+05 68.21 61.71 0.2721E+05 0.000 9.228 0.000

49372 5.009 0.1011E-03 SHELL 159 0.8% 0.2730E+05 68.14 61.81 0.2721E+05 0.000 9.228 0.000

49373 5.009 0.1011E-03 SHELL 159 0.8% 0.2730E+05 68.07 61.90 0.2721E+05 0.000 9.228 0.000

49374 5.009 0.1011E-03 SHELL 159 0.8% 0.2730E+05 68.02 62.00 0.2721E+05 0.000 9.228 0.000

49375 5.010 0.1011E-03 SHELL 159 0.8% 0.2730E+05 67.97 62.09 0.2721E+05 0.000 9.228 0.000

49376 5.010 0.1011E-03 SHELL 159 0.8% 0.2730E+05 67.92 62.17 0.2721E+05 0.000 9.228 0.000

49377 5.010 0.1011E-03 SHELL 159 0.8% 0.2730E+05 67.88 62.25 0.2721E+05 0.000 9.228 0.000

49378 5.010 0.1011E-03 SHELL 159 0.8% 0.2730E+05 67.85 62.32 0.2721E+05 0.000 9.228 0.000

49379 5.010 0.1011E-03 SHELL 159 0.8% 0.2730E+05 67.81 62.38 0.2721E+05 0.000 9.228 0.000

End of file.

Case 2: Material card settings

Changes to be made in /FAIL/JOHNSON card:

  • ifail_sh= 1
  • Dadv= 1
  • Ixfem= 1

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

49204 5.009 0.1069E-03 SHELL 210 4.1% 0.3080E+05 148.8 60.49 0.2980E+05 0.000 9.228 0.000

49205 5.009 0.1069E-03 SHELL 210 4.1% 0.3080E+05 148.4 60.58 0.2980E+05 0.000 9.228 0.000

49206 5.009 0.1069E-03 SHELL 210 4.1% 0.3080E+05 147.9 60.65 0.2980E+05 0.000 9.228 0.000

49207 5.009 0.1069E-03 SHELL 210 4.1% 0.3080E+05 147.4 60.72 0.2980E+05 0.000 9.228 0.000

49208 5.009 0.1069E-03 SHELL 210 4.1% 0.3080E+05 146.9 60.78 0.2980E+05 0.000 9.228 0.000

49209 5.009 0.1069E-03 SHELL 210 4.1% 0.3081E+05 146.4 60.84 0.2980E+05 0.000 9.228 0.000

49210 5.009 0.1069E-03 SHELL 210 4.1% 0.3081E+05 145.9 60.90 0.2980E+05 0.000 9.228 0.000

49211 5.009 0.1069E-03 SHELL 210 4.1% 0.3081E+05 145.3 60.96 0.2980E+05 0.000 9.228 0.000

49212 5.010 0.1069E-03 SHELL 210 4.1% 0.3081E+05 144.7 61.03 0.2980E+05 0.000 9.228 0.000

49213 5.010 0.1069E-03 SHELL 210 4.1% 0.3081E+05 144.1 61.10 0.2980E+05 0.000 9.228 0.000

49214 5.010 0.1069E-03 SHELL 210 4.1% 0.3081E+05 143.4 61.19 0.2980E+05 0.000 9.228 0.000

49215 5.010 0.1069E-03 SHELL 210 4.1% 0.3082E+05 142.6 61.29 0.2980E+05 0.000 9.228 0.000

49216 5.010 0.1069E-03 SHELL 210 4.1% 0.3082E+05 141.9 61.40 0.2980E+05 0.000 9.228 0.000

End of file.

Case:3

The failure card is going to be disabled:

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

49390 5.008 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.83 59.97 0.2736E+05 0.000 9.228 0.000

49391 5.008 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.64 60.07 0.2736E+05 0.000 9.228 0.000

49392 5.008 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.54 60.18 0.2736E+05 0.000 9.228 0.000

49393 5.009 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.54 60.31 0.2736E+05 0.000 9.228 0.000

49394 5.009 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.67 60.44 0.2736E+05 0.000 9.228 0.000

49395 5.009 0.1010E-03 SHELL 159 0.8% 0.2745E+05 80.92 60.58 0.2736E+05 0.000 9.228 0.000

49396 5.009 0.1010E-03 SHELL 159 0.8% 0.2745E+05 81.28 60.72 0.2736E+05 0.000 9.228 0.000

49397 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 81.75 60.87 0.2736E+05 0.000 9.228 0.000

49398 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 82.30 61.03 0.2736E+05 0.000 9.228 0.000

49399 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 82.91 61.18 0.2736E+05 0.000 9.228 0.000

49400 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 83.56 61.33 0.2736E+05 0.000 9.228 0.000

49401 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 84.22 61.47 0.2736E+05 0.000 9.228 0.000

49402 5.009 0.1010E-03 SHELL 159 0.8% 0.2744E+05 84.85 61.60 0.2736E+05 0.000 9.228 0.000

49403 5.010 0.1010E-03 SHELL 159 0.8% 0.2744E+05 85.45 61.72 0.2736E+05 0.000 9.228 0.000

49404 5.010 0.1010E-03 SHELL 159 0.8% 0.2744E+05 85.98 61.83 0.2736E+05 0.000 9.228 0.000

49405 5.010 0.1010E-03 SHELL 159 0.8% 0.2744E+05 86.43 61.93 0.2736E+05 0.000 9.228 0.000

49406 5.010 0.1010E-03 SHELL 159 0.8% 0.2744E+05 86.80 62.02 0.2736E+05 0.000 9.228 0.000

49407 5.010 0.1010E-03 SHELL 159 0.8% 0.2744E+05 87.08 62.10 0.2736E+05 0.000 9.228 0.000

End of file.

Case 4:

Removing both the failure plastic strain (EPS_p_max) and the fail_Jhonson failure card.

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

48730 5.009 0.1052E-03 SHELL 159 3.0% 0.6486E+05 2.968 0.2468E-01 0.6297E+05 0.000 9.228 0.000

48731 5.009 0.1052E-03 SHELL 159 3.0% 0.6486E+05 2.968 0.2467E-01 0.6297E+05 0.000 9.228 0.000

48732 5.010 0.1052E-03 SHELL 159 3.0% 0.6486E+05 2.968 0.2467E-01 0.6297E+05 0.000 9.228 0.000

48733 5.010 0.1052E-03 SHELL 159 3.0% 0.6487E+05 2.968 0.2467E-01 0.6298E+05 0.000 9.228 0.000

48734 5.010 0.1052E-03 SHELL 159 3.0% 0.6487E+05 2.969 0.2466E-01 0.6298E+05 0.000 9.228 0.000

48735 5.010 0.1052E-03 SHELL 159 3.0% 0.6487E+05 2.969 0.2466E-01 0.6298E+05 0.000 9.228 0.000

48736 5.010 0.1052E-03 SHELL 159 3.0% 0.6487E+05 2.969 0.2465E-01 0.6298E+05 0.000 9.228 0.000

End of output file

Case:5

changing the material card to Law 1

Keep the recommended value for rho, E, and nu values

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

48840 5.009 0.1076E-03 SHELL 159 -9.3% 0.7677E+06 5460. 3268. 0.8562E+06 0.000 9.077 0.000

48841 5.009 0.1078E-03 SHELL 159 -9.4% 0.7623E+06 9935. 3782. 0.8563E+06 0.000 9.077 0.000

48842 5.009 0.1078E-03 SHELL 159 -9.5% 0.7604E+06 0.1155E+05 3301. 0.8564E+06 0.000 9.077 0.000

48843 5.009 0.1075E-03 SHELL 159 -9.5% 0.7635E+06 9048. 2194. 0.8564E+06 0.000 9.077 0.000

48844 5.009 0.1073E-03 SHELL 159 -9.5% 0.7692E+06 4351. 1314. 0.8564E+06 0.000 9.077 0.000

48845 5.009 0.1073E-03 SHELL 159 -9.5% 0.7730E+06 1035. 1305. 0.8565E+06 0.000 9.077 0.000

48846 5.010 0.1074E-03 SHELL 159 -9.4% 0.7722E+06 1579. 2164. 0.8565E+06 0.000 9.077 0.000

48847 5.010 0.1076E-03 SHELL 159 -9.4% 0.7672E+06 5561. 3261. 0.8566E+06 0.000 9.077 0.000

48848 5.010 0.1078E-03 SHELL 159 -9.5% 0.7618E+06 9987. 3763. 0.8566E+06 0.000 9.077 0.000

48849 5.010 0.1079E-03 SHELL 159 -9.5% 0.7602E+06 0.1150E+05 3270. 0.8567E+06 0.000 9.077 0.000

48850 5.010 0.1076E-03 SHELL 159 -9.6% 0.7634E+06 8912. 2163. 0.8567E+06 0.000 9.077 0.000

End of file.

CASE 6

Change into law 36 material card:

Create function for Law 36 as per recommended input values.

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

53130 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 338.2 363.5 0.3992E+05 0.000 9.077 0.000

53131 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 338.7 363.3 0.3992E+05 0.000 9.077 0.000

53132 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 339.1 363.0 0.3992E+05 0.000 9.077 0.000

53133 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 339.3 362.8 0.3992E+05 0.000 9.077 0.000

53134 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 339.3 362.5 0.3992E+05 0.000 9.077 0.000

53135 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 339.1 362.2 0.3992E+05 0.000 9.077 0.000

53136 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 338.8 362.0 0.3992E+05 0.000 9.077 0.000

53137 5.009 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 338.3 361.7 0.3992E+05 0.000 9.077 0.000

53138 5.010 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 337.6 361.4 0.3992E+05 0.000 9.077 0.000

53139 5.010 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 336.9 361.2 0.3992E+05 0.000 9.077 0.000

53140 5.010 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 336.0 360.9 0.3992E+05 0.000 9.077 0.000

53141 5.010 0.9427E-04 SHELL 159 -1.8% 0.3851E+05 335.1 360.7 0.3992E+05 0.000 9.077 0.000

53142 5.010 0.9427E-04 SHELL 159 -1.8% 0.3852E+05 334.1 360.5 0.3992E+05 0.000 9.077 0.000

End of file.

Case7:

Change into law 27 material card for the input file Law27_0000

Feed recommended shell id values:

Output file:

CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR TOTAL MASS MASS ADDED

49500 5.009 0.1004E-03 SHELL 159 0.8% 0.2954E+05 63.90 34.99 0.2940E+05 0.000 9.228 0.000

49501 5.009 0.1004E-03 SHELL 159 0.8% 0.2954E+05 63.95 35.01 0.2940E+05 0.000 9.228 0.000

49502 5.010 0.1004E-03 SHELL 159 0.8% 0.2954E+05 64.06 35.04 0.2940E+05 0.000 9.228 0.000

49503 5.010 0.1004E-03 SHELL 159 0.8% 0.2954E+05 64.21 35.08 0.2940E+05 0.000 9.228 0.000

49504 5.010 0.1004E-03 SHELL 159 0.8% 0.2954E+05 64.42 35.13 0.2940E+05 0.000 9.228 0.000

49505 5.010 0.1004E-03 SHELL 159 0.8% 0.2954E+05 64.68 35.19 0.2940E+05 0.000 9.228 0.000

49506 5.010 0.1004E-03 SHELL 159 0.8% 0.2954E+05 65.00 35.26 0.2940E+05 0.000 9.228 0.000

End of file

Comparison of cases:

Total No of cycles

Energy error(%)

Mass error(%)

Simulation time(sec)

Case1

49379

0.8

0.000

288

Case2

49216

4.1

0.000

348

Case3

49407

0.8

0.000

170

Case4

48736

3

0.000

178

Case5

48850

-9.6

0.000

166

Case6

53142

-1.8

0.000

57

Case7

49506

0.8

0.000

251

Contour maps and energy graphs

Case1:

Energy curve plots:

Case2:

Energy plots:

Case:3

Energy plots:

Case4:

Energy plots:

Resultant force vs time:

Case 5:

Contour maps:

Energy plots:

Total Resultant force vs time

Case 6:

Contour maps

Energy plots:

Total resultant force vs time

Case:7

Contour maps

Energy plots:

Total tresultant force vs time

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