The .disp file is an OptiStruct
ASCII format results file.
File Creation
This file is created when the OPTI, OS or BOTH formats are chosen. (See documentation
for the I/O Option OUTPUT).
File Contents
| Result |
Description |
| Acceleration |
Acceleration results from
frequency response analysis and linear transient analysis. Output
is controlled by the I/O Option ACCELERATION. |
| Displacement |
Displacement results from
linear static, inertia relief, frequency response analysis, and
linear transient analysis. Output is controlled by the I/O Option
DISPLACEMENT. |
| Eigenvector |
Eigenvector results from
normal modes and linear buckling analysis. Output is controlled
by the I/O Option DISPLACEMENT. |
| Velocity |
Velocity results from
frequency response analysis and linear transient analysis. Output
is controlled by the I/O Option VELOCITY. |
File Format
The displacement file has the following format:
| For each iteration, the following header is
used: |
|
iter |
Iteration |
Numids |
- Data
- Description
- iter
- Keyword identifying that the next field is the iteration number.
- Iteration
- The iteration number.
- Numids
- The number of linear static subcases plus the number of calculated
normal and buckling modes.
| Within the iteration section, the following header
is used for each linear static subcase, normal or linear
buckling mode, or direct modal frequency response: |
|
LCID |
Numnod |
Freq |
Result:
SPCcase
(Datatype) |
- Data
- Description
- LCID
- Output ID for the subcase or mode. This is not necessarily the same as
the subcase ID defined in the input data.
- Numnod
- Number of grids in the model.
- Freq
- Frequency or Buckling eigenvalue (1.0 for static subcases).
- Result
- Keyword declaring the result type given.
- DISP indicates displacement result.
- VELO indicates a velocity result (for frequency
response analysis only).
- ACCE indicates an acceleration result (for frequency
response analysis only).
- SPCcase
- SPC set identification number for linear static, inertia relief, or
frequency response subcases or 1 for eigenvectors.
- Datatype
- Keyword indicating the type of subcase involved.
- LOAD declares data is from a static subcase.
- EIGV declares data is from a normal modes subcase.
- BKLV declares data is from a linear buckling
subcase.
- DFRQ declares data is from a direct frequency response
subcase.
- MFRQ declares data is from a modal frequency response
subcase.
| Within the subcase or mode section, the following
information is provided for each node: |
|
NID |
X
disp |
Y
disp |
Z
disp |
|
- Data
- Description
- NID
- Node identification number.
- X
- X displacement of the node.
- Y
- Y displacement of the node.
- Z
- Z displacement of the node.
The displacement file has the following format for linear transient analysis:
| For each
iteration, the following header is used: |
|
iter |
Iteration |
|
- Data
- Description
- iter
- Keyword identifying that the next field is the iteration number.
- Iteration
- The iteration number.
| Within the
iteration section, the following header is used for each
transient analysis subcase: |
| Subcase |
Id |
Label |
|
| Time |
Time |
|
|
| Result Type |
Domain |
[Format] |
|
- Data
- Description
- Id
- Output ID for the subcase. This is not necessarily the same as the
subcase ID defined in the input data.
- Label
- Subcase label.
- Time
- Time increment information.
- Format
- Complex, Real, Imaginary, Phase, and so on.
- Result Type
- Keyword declaring the result type given.
- DISP indicates displacement results.
- VELO indicates a velocity result.
- ACCE indicates an acceleration result.
| Within the subcase section, the following information is
provided for each grid: |
|
GID |
X |
Y |
Z |
RX |
RY |
RZ |
- Data
- Description
- GID
- Grid identification number.
- X
- X value of the grid.
- Y
- Y value of the grid.
- Z
- Z value of the grid.
- RX
- RX value of the grid.
- RY
- RY value of the grid.
- RZ
- RZ value of the grid.
Comments
- The I/O Option Previously Supported Results controls
the frequency of output for analytical results during an optimization.