.force file
The .force file is an OptiStruct ASCII format results file.
File Creation
Creation of this file is controlled by the FORCE (ELFORCE) I/O Option.
File Contents
Result | Description |
---|---|
Force | Force results from Linear
Static Analysis for ELAS (CELAS1,
CELAS2, CELAS3,
CELAS4), ROD (CROD), BAR
(CBAR, CBEAM), BUSH
(CBUSH), PLATE (CQUAD,
CTRIA), and GAP (CGAP)
elements. Force results from Normal Modes Analysis for ELAS (CELAS1, CELAS2), ROD (CROD), BAR (CBAR), PLATE (CQUAD4, CQUAD8, CTRIA3, CTRIA6, CSHEAR), SHEAR (CSHEAR), BUSH (CBUSH), GAP (CGAP, CGAPG), CONTACT (CGAPG), WELD (CWELD), and FAST (CFAST) elements. Force results from Linear Transient Analysis for ELAS (CELAS1, CELAS2), BAR (CBAR), ROD (CROD), BUSH (CBUSH), WELD (CWELD), PLATE (CQUAD4, CQUAD8, CTRIA3, CTRIA6, CSHEAR) elements. |
File Format
ITER | Iteration_number | Number_of_subcases/Number_of_Modes |
- Data
- Description
- ITER
- Keyword denoting the beginning of a new iteration.
- Iteration_number
- Iteration number.
- Number_of_subcases
- Number of subcases for which this output is created.
- Number_of_Modes
- Total number of modes of all subcases for which this output is created.
Static Analysis
Id | Number_of_elements | Frequency | LOAD:Spc_id(Datatype) | subcase_label |
- Data
- Description
- ID
- Output identification number for the subcase. This is not the same as the subcase ID used in the input data.
- Number_of_elements
- Number of elements for which this output is requested.
- Frequency
-
- 1.0
- Static analysis.
- LOAD
- Keyword declaring applied load information.
- Spc_id
- The SID for SPC's referenced by this subcase.
- (Datatype)
- Keyword indicating the type of subcase involved.
Normal Modes Analysis
Id | Number_of_elements | FREQ: FRID freq | Subcase_label |
- Data
- Description
- ID
- Output identification number for the subcase.
- Number_of_elements
- Number of elements for which this output is requested.
- FREQ
- Keyword identifying the modal frequency.
- FRID
- ID of the modal frequency for which output is printed.
- Freq
- Value of the modal frequency for which the output is printed.
- (Datatype)
- Keyword indicating the type of subcase involved.
Linear Static Analysis .force File Example
ELAS # FORCE
ROD# FORCE-A FORCE-B
BUSH# F-X F-Y F-Z M-X M-Y M-Z
BAR# END AXIAL SHEAR-1 SHEAR-2 TORQUE BENDING-1 BENDING-2
PLATE# MEMB-X MEMB-Y MEMB-XY BEND-X BEND-Y TWIST-XY SHEAR-XZ SHEAR-YZ
GAP# COMP-X SHEAR-Y SHEAR-Z
Element force output is then listed under these headings, depending on the type of elements for which this output was selected. The format of the element output matches the corresponding header, that is for ROD elements you would get FORCE-A and FORCE-B; whereas, for PLATE elements you would get MEMB-X, MEMB-Y, MEMB-XY, BEND-X, BEND-Y, TWIST-XY, SHEAR-XZ, SHEAR-YZ.
Eid | value1 | value2 | value3 | etc. |
- Data
- Description
- Eid
- Element identification number.
- value#
- Force result corresponding to the column header.
Linear Transient Analysis
Subcase | Id | Label | ||
Time | Time | |||
Result Type | (Entity Type) | [Format] |
- Data
- Description
- Id
- Output identification number for the subcase. This is not the same as the subcase ID used in the input data.
- Label
- Subcase level.
- Time
- Time increment information.
- Entity Type
- Beam, Rod, Plate, and so on.
- Format
- Complex, Real, Imaginary, Phase, and so on.
- Data
- Description
- EID
- Element identification number.
- Value#
- Force result corresponding to the column header.
Within the subcase section, the following information is provided for each grid: | ||||||||
EID | value1 | value2 | value3 | value4 | value5 | value6 | value7 |
Average Force Results
Average force results are available for CBAR and CBEAM elements only when the AVG option is used in the FORCE (ELFORCE) output request.
<end forces>
BAR # AXIAL SHEAR-1 SHEAR-2 TORQUE BENDING-1 BENDING-2
Comments
- The I/O Option Previously Supported Results controls the frequency of output for analytical results during an optimization.