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Quality Criteria |
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Quality Criteria |
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»Click here to display Table of Contents«
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Quality Criteria |
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Quality Criteria |
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The file, $MCRASHDIR/mcrash_criteria defines the Quality / Check Element of Tree Selection parameters, where the user can error check an element.
/Keyword/Nb_param/Param_1/Param_2/…/Param_nb_param
Where: |
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Type |
Unit |
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is the keyword defining the element quality criteria. |
String |
No |
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is the number of parameters to read |
Integer |
No |
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is the element type that will be checked with the element quality criteria |
String |
No |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
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Criteria_S |
Criteria_1 |
Criteria_2 |
Criteria_3 |
Criteria_4 |
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Where: |
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Type |
Unit |
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is the value that defines the bad element limit for mesh class i. |
Real |
Depends on the criteria |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
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Criteria_S |
Criteria_1 |
Criteria_2 |
Criteria_3 |
Criteria_4 |
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Where: |
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Type |
Unit |
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is the value that defines the good element limit for mesh class i. |
Real |
Depends on the criteria |
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Criteria name |
Keywords |
Parameters |
Criteria unit |
|---|---|---|---|
Time step: (see RADIOSS manual)
Computed value has to be greater than limit. |
ELT_TIMESTEP |
SHELL3N SHELL4N SPRING BEAM TRUSS SOLID |
Time |
Minimum mesh size
Computed value has to be greater than limit. |
ELT_MINSIZE |
SHELL4N SHELL3N SPRING BEAM TRUSS |
Length |
Maximum mesh size
Computed value has to be smaller than limit. |
ELT_MAXSIZE |
SHELL4N SHELL3N SPRING BEAM TRUSS |
Length |
Minimum angle: the smallest interior angle of the element projected onto its middle plane.
Computed value has to be greater than limit. |
ELT_MINANGLE |
SHELL4N SHELL3N |
Degrees |
Maximum angle: the greatest interior angle of the element projected onto its middle plane.
Computed value has to be greater than limit. |
ELT_MAXANGLE |
SHELL4N SHELL3N |
Degrees |
Warping: The normal at each node is computed, that is, the normal of the plane including this node and its two neighbors. The two angles between opposite normal vectors are computed. The greater one of these two angles is the warping. Computed value has to be smaller than limit. |
ELT_WARPING |
SHELL4N |
Degrees |
Aspect ratio: aspect ratio is calculated as (length of longest side / length of shortest side). Computed value has to be smaller than limit (closer to 1.0). |
ELT_ASPECT |
SHELL4N |
No |
4 nodes shell degeneration |
ELT_DEGENERATED |
SHELL4N |
No criteria |
Minimum mass |
ELT_MINMASS |
SPRING BEAM TRUSS |
Mass |
Maximum mass |
ELT_MAXMASS |
SPRING BEAM TRUSS |
Mass |
Percentage of 3 node shell elements in parts |
PART_TRIAS |
--- |
No |
Maximum mass of the parts |
PART_MASS |
--- |
Mass |
/END
Where: |
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Type |
Unit |
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Keyword to finish the input. |
Keyword |
No |
#--1---|---2---|---3---|---4---|---5---|---6---|---7---|---8---|---9---|--10---| #-- CLASS S ---|--- CLASS 1 ---|--- CLASS 2 ---|--- CLASS 3 ---|--- CLASS 4 ---| /ELT_TIMESTEP/6/SHELL3N/SHELL4N/SPRING/BEAM/TRUSS/SOLID 8e-7 8e-7 8e-7 8e-7 8e-7 1e-6 1e-6 1e-6 1e-6 1e-6 #--1---|---2---|---3---|---4---|---5---|---6---|---7---|---8---|---9---|--10---| /ELT_MINSIZE/2/SHELL3N/SHELL4N 6 5 5 6 6 8 #--1---|---2---|---3---|---4---|---5---|---6---|---7---|---8---|---9---|--10---| /ELT_MAXSIZE/2/SHELL3N/SHELL4N 100 10 20 40 100
#--1---|---2---|---3---|---4---|---5---|---6---|---7---|---8---|---9---|--10---| /ELT_MINANGLE/1/SHELL3N 30 45 45 30 30 45 #--1---|---2---|---3---|---4---|---5---|---6---|---7---|---8---|---9---|--10---| #-- CLASS S ---|--- CLASS 1 ---|--- CLASS 2 ---|--- CLASS 3 ---|--- CLASS 4 ---| /PART_TRIAS/ 15 15 15 20 30 10 10 10 15 20 /PART_MASS/ 20e-3 20e-3 20e-3 20e-3 20e-3
/END |
