Starter Keywords Syntax
Block Format Keyword
This section describes the general syntax rules for writing a Radioss Block Format input deck, including the Block Format syntax, required keywords, keyword examples, fixed format input, and default values.
These rules apply to all the options, which are individually defined in this manual.
Block Format Syntax
Each block begins with a forward slash (/), followed by a keyword and ends at the beginning of the next block.
- /BEGIN - This must be the first keyword entered, see next section for more details.
- /TRANSFORM - When multiple transformations are used, the transformation is applied in the order of the input.
- /END - This is the last keyword read. Any input entered after will be ignored.
Each block defines one option, a set of flags or switches, or a set of nodes or elements.
The input deck finishes with the /END keyword.
The content of each block is entered in fixed format (see below).
Blank lines at the end of each block are ignored.
Lines with a # or $ in the first column are comment lines except for these 3 special options that begin with a #: #RADIOSS STARTER, #enddata, and #include.
Required Keywords
#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#New drop test model
/BEGIN
Drop
2017 0
g mm ms
g mm ms
...
...
/END
General Keyword Formats
There are 3 general keyword formats
/KEYWORD
flag1 flag2 flag3 ...
Example: Global Parameters
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Ipri | Irtyp | Ioutp | OutyyFMT | Irootyy | Irtyp_r |
/OPTION_KEYWORD[/SUBKEYWORD/…]/option_ID[/unit_ID]
option_title
option input ...
The option_ID is defined and the option_title is associated to this option_ID in the first line.
If the same option is used several times, a different option_ID and a different option_title have to be used each time.
The option_title can have a maximum of 100 characters and must not start with a forward slash ( / ).
Example: Keyword with option_ID
/IMPVEL/impvel_ID/unit_ID
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
fct_ID | Dir | Skew_ID | sens_ID | grnd_ID | frame_ID | ||||
Fscalex | Fscaley | Tstart | Tstop |
/OPTION_KEYWORD[/SUBKEYWORD/…]/reference_ID[/unit_ID]
…
option input
…
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
node_ID | Xc | Yc | Zc |
The nodes can be defined in one or more blocks.
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Ishell | node_ID1 | node_ID2 | node_ID3 | node_ID4 | Thick |
In the above syntax, the part_ID is only used for element definition; but it is not defined in this block.
The part_ID's are defined in /PART option.
The list of elements belonging to one part can be defined in one or more blocks.
Example 3: Keyword without Option
/FAIL/Key/mat_ID/unit_ID
//SUBMODEL/submodel_ID/unit_ID
submodel_title
…
option input
…
//ENDSUB
Block Keyword Input Fixed Format
The content of any block is formatted in lines of 100 characters, divided into 10 fields of 10 characters.
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
The first row of the table gives the fields number. The second row shows the variables description.
Only the field with defined input should be used. All other fields and blank formats are reserved and must not be used. Users should not put comments in the fields that are not used, but instead should use comment lines that begin with a “#” or “$”.
Default Values
/IMPDISP/7
compression
# Ifunct DIR Iskew Isensor Gnod_id Frame
4 X 1150
# Scale_x Scale_y Tstart Tstop
0
The actual values used by the solver are written to the Starter output file, Runname_0000.out. For real number fields with default values that are not zero, it is not possible to define the field as zero since this would cause the default value to be used. Therefore, if a zero numerical value is needed a very small number, i.e. 1e-30, can be used as a zero-value entry.
Field Entry Input
- All integers are given in one 10 digit field with a maximum of 9 digits.
- All reals are entered in two fields with a maximum of 20 digits.
- Characters can have variable length, the maximum length is given for each entry.
- For boundary conditions, single-digit booleans (value 0 or 1) are used. The format is in this case, given by showing the place of each boolean in the field (see table below).
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Integer | Boolean | Real |
(2)-1 | (2)-2 | (2)-3 | (2)-4 | (2)-5 | (2)-6 | (2)-7 | (2)-8 | (2)-9 | (2)-10 |
---|---|---|---|---|---|---|---|---|---|
VX | VY | VZ | X | Y | Z |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
Character |