File Extensions and Formats
Current Radioss format uses the 12x extension format.
| 4x Extension Format | 12x Extension Format | Type | Format | Remark | Read by | Written by | 
|---|---|---|---|---|---|---|
| RunnameD00 | Runname_0000.rad | Starter input | ASCII | Starter | HyperCrash HyperMesh | |
| N/A | Runname.radopt (13x extension) | Optimization Input | ASCII | OptiStruct | HyperCrash HyperMesh | |
| RunnameDnn | Runname_run#.rad | Engine input | ASCII | Engine | HyperCrash HyperMesh | |
| RunnameRnn | Runname_run#_cpu # [_C].rst | Restart file | Any | Default binary | Engine | Starter Engine | 
| RunnameAnnn | RunnameAnnn | Animation | IEEE binary | HyperView | Engine | |
| N/A | Runname.h3d | Animation | H3D | HyperView | Engine (starting in 2018) or HvTrans through run script | |
| RunnameTnn | If Radioss Engine option /TH/VERS/41 is used
                                            (default): RunnameTnn If Radioss Engine option /TH/VERS/51 is used: Runname_run#.thy | Time history | Any | Default IEEE binary | HyperGraph | Engine | 
| RunnameTnnx | If Radioss Engine option /TH/VERS/41 is used
                                            (default): RunnameTnnx If Radioss Engine option /TH/VERS/51 is used: Runname_run#_x.thy "x": letter (a to i) | Time history | Any | Default IEEE binary | HyperGraph | Engine | 
| Runname@Tnn | Runname_run#_@.thy | MNOISE file | Any | HyperGraph | Engine | |
| RunnameLnn | Runname_run#.out | Listing | ASCII | Engine | ||
| RunnameYnnn | Runname_nnnn.sty or
                                        RunnameYnnn according to /IOFLAG if Irootyy = 2: RunnameYnnn if Irootyy ≠ 2: Runname_run#.sty | Output | ASCII | Starter | Engine | |
| N/A | Runname_nnnn.sta | State file | ASCII | Starter | Engine | |
| N/A | Runname_nnnn.dynain | State file with LS-DYNA format | ASCII | Engine | ||
| RunnameCnn | Runname_run#.ctl | Control file | ASCII | Engine | User | 
Comments
- Maximum Runname length is 80 characters and the characters "/" and "\" may not be used.
- run#: Radioss run number (four digits) from 0000 to 9999.
- cpu #: number of SPMD processors (four digits) from 0001 to 9999.
- C: restart letter (refer to /RFILE/n in the Radioss Engine Input manual).
- In case of Single File Input, Engine options can be added into Starter file. Refer to Single File Input for details.
- Though the current version of Radioss is able to read 4.x extension input files, output files always follow 12.x extension format.