Types of Results Processed by D3PLOT
Types of results processed by D3PLOT
Ansys LS-DYNA is a three-dimensional non-linear analysis code which models the transient behaviour of structures in the time domain. The output you may process graphically in D3PLOT is shown by category below, together with the intrinsic coordinate system in which it is written by Ansys LS-DYNA.
| ENTITY TYPE | DATA GENERATED | COORDINATE SYSTEM | |
| Nodes: |
Coordinates
Velocities Accelerations Temperatures |
Global cartesian
" " " " [none] |
|
| Solids: (1) |
Stress tensor
Plastic strain Strain tensor (optional) |
Global cartesian
[none] Global cartesian |
|
| Thin shells: (2) |
Stress tensor
Strain tensor (optional) Forces and moments Plastic strain Thickness Strain energy density |
Global cartesian
" " Element local [none] [none] [none] |
|
| Thick shells: (2) |
Stress tensor
Plastic strain Strain tensor (optional) |
Global cartesian
[none] Global cartesian |
|
| Beams: (3) |
Forces and moments
Plastic data (optional) Stress/strain data (optional) |
Element local
" " " " |
|
| SPH elements: (4) |
Stress tensor
Plastic strain Strain tensor Density Pressure Internal energy Radius of influence |
Also: #neighbours |
Global cartesian
|
| Airbag particles: (4) |
Mass
Radius Spin energy Trans energy Distance to nearest segment Coordinates Velocities |
Also:
Gas ID
|
[none]
|
| Spotwelds: (5) |
Axial force
Shear force Failure status Failure time |
Element local
" " [none] " " |
|
| Springs and dampers: (5) |
Force
Elongation Moment Rotation |
Element local
" " " " " " |
|
| Seatbelt elements: (5) |
Belt force
Belt length Slipring pull-through Retractor force Retractor pull-out |
Element local
|
|
| SPC forces: (5) | Forces and Moments | Global Cartesian | |
| Cross sections (*DATABASE_CROSS_SECTION): (5) | Forces and Moments | Global Cartesian | |
| Contact surfaces |
Contact stresses
Contact forces |
Segment local
Global cartesian |
|
|
(1)
|
Results for solids are by default written by Ansys LS-DYNA at the element centre only, even if an element formulation with > 1 integration point is used. Solid results can be written at all integration points for element formulations with > 1 integration point by setting NINTSLD=8 on the *DATABASE_EXTENT_BINARY card. Solid results from NIKE3D are written at all 8 integration points. |
|
(2)
|
By default shell stress and strain tensor results are written at top and bottom integration points, and stresses also at the neutral axis. Data output at more than these 3 points through the element thickness may be selected, and will be available for display if present. Fully integrated shells in ls-dyna with more than 1 integration point on plan still only write (averaged) data at the element centre. |
|
(3)
|
As well as basic forces and moments extra "plastic" data from resultant beams, and data at integration points for integrated beams are supported. |
|
(4)
|
SPH and Airbag particle data are only processed from D3PLOT 9.3 onwards. |
|
(5)
|
These elements and data components are only processed from D3PLOT 9.4 onwards, and they require a ZTF file to provide geometry (for display) and a binout (LSDA) file if results are to be extracted. |
D3PLOT will generate derived data components, (eg von Mises, principal, etc) from the above, and will also transform results from global to local coordinate systems if required.
In addition the following written output may be generated for more "global" model data.
| ENTITY TYPE | DATA COMPONENT | COORDINATE SYSTEM |
| Whole model |
Average velocity & momentum
Kinetic and internal energies Mass |
Global cartesian
[none] [none] |
| Each material |
Average velocity & momentum
Kinetic and internal energies Mass |
Global cartesian
[none] [none] |
| Contact surfaces | Summary forces | Global cartesian |
| Airbags (of Airbag particles) | Volume | [none] |
| Stonewalls | Normal force | Local vector |
Any data component written for nodes or elements that is actually present in the database files may be plotted graphically, presented as an X-Y plot of <data> vs <time> (or vs <data>), and written out in tabular form. This is also true of components derived from the basic ones.
In addition many geometric and topological attributes of nodes and elements (eg material number, elements connected to nodes) may be tabulated.
Any scalar data component may be "scanned" for maximum / minimum values, and tables of the top and bottom values produced.
Although their topology is extracted and they are displayed visually the results for springs, joints, seat-belts etc, are not available for plotting in D3PLOT. This is because these data are not currently available in the appropriate database files.