D3PLOT 22.1
Key to Finding Information in Ansys LS-DYNA Database Files
Key to finding information in Ansys LS-DYNA database files
| .PTF file | .CTF file | .THF file | .XTF file | |
Whole model data: |
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| Global energies | KE, IE, TE | KE, IE, TE | KE, IE, TE | KE, IE, TE |
| Global velocities | VX, VY, VZ | VX, VY, VZ | VX, VY, VZ | VX, VY, VZ |
| External work | EW | |||
| Time-step | DT | |||
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Data by material: |
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| Material energies | KE, IE | KE, IE | ||
| Material velocities | VX, VY, VZ | VX, VY, VZ | ||
| Masses | Mass | Mass | ||
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Nodal data: |
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| Geometry | [X,Y,Z] coords | [X,Y,Z] coords | [X,Y,Z] coords | [X,Y,Z] coords |
| Displacements | [dX,dY,dZ] | [dX,dY,dZ] | [dX,dY,dZ] | [dX,dY,dZ] |
| Temperatures | [temps] | [temps] | ||
| Velocities | [vX,vY,vZ] | [vX,vY,vZ] | [vX,vY,vZ] | |
| Accelerations | [aX,aY,aZ] | [aX,aY,aZ] | ||
| Nodes for reactions | Geom + reacts | |||
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Solid & thick shell element data: |
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| Topology | Connectivity & mat'l | Connectivity & mat'l | ||
| Stresses &c | Stress tensor | Stress tensor | ||
| Plastic Strain | Plastic strain | |||
| Strain tensor | Strain tensor | |||
| Extra variables | Extra variables | |||
| (Els in TH blocks) | ||||
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Thin shell element data: |
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| Topology | Connectivity & mat'l | Connectivity & mat'l | ||
| Stresses &c | Stress tensor | Stress tensor | ||
| Plastic Strain | Plastic strain | |||
| Strain tensor | Strain tensor | |||
| Extra variables | Extra variables | |||
| Force/moment resultants | Force/moment resultants | |||
| Thickness & strain energy density | Thickness & strain energy density | |||
| (Els in TH blocks) | ||||
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Beam element data: |
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| Topology | Connectivity & mat'l | Conn'ty & mat'l | Conn'ty & mat'l | |
| Results | Forces & moments | Forces & moments | Extra data Mat'l 29 | |
| Extra data Mat'l 29 | (Els in TH blocks) | (Els in TH blocks) | ||
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Spring element data: |
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| Topology | Conn'ty & mat'l | |||
| Results | Force/elongation | |||
| Moment/rotation | ||||
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Seat-belt etc elem data: |
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| Topology | Conn'ty & mat'l | |||
| Results | Force/elongation | |||
| /pullout etc | ||||
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Lumped-mass element data: |
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| Topology | Node no & mass | |||
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Stonewall data: |
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| Geometry | All geom | |||
| Normal forces | Fwalls | Fwalls | Fwalls | |
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Interface data: |
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| Geometry | All geom | |||
| Summary forces | Fx,Fy,Fz summaries | |||
| Detailed results | Segment stresses | |||
| All nodal forces | ||||
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Joint data: |
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| Topology | Nodes, type | |||
| stiffness | ||||
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Airbag (control volume) data: |
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| Results | Pressures etc | |||
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Notes on file types:
| .PTF file : | "Complete state" file | is written at low frequency and has a complete description of the whole model. |
| .CTF file : | "Contact force" file | is written at the same frequency as the .PTF file, & is a complete description of the interface forces & stresses. |
| .THF file : | "Time history" file | is written at a high frequency and contains a (user-specified) subset of the model for detailed examination. It is used for XY graph type display (eg T/HIS). |
| .XTF file : | "Extra time-hist" file | is written at the same frequency as the .THF file, and contains extra information that cannot be accomodated in the .THF file structure. Used for XY plots, and also for providing the geometry for the graphics display of walls, joints, springs, etc |
| .ZTF file : | "Extra static data" file | is not generated by Ansys LS-DYNA, but rather by running PRIMER either in batch (immediately after the analysis) or manually. Extra "static" data are extracted from the keyword input deck and become available for post-processing. |