.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. |
File Format
The file is divided up by iteration. Output from each iteration starts with a line in the
following format:
| ITER | Iteration_number | Number_of_subcases |
Where:
- Data
- Description
- ITTER
- Keyword denoting the beginning of a new iteration
- Iteration_number
- Iteration number.
- Number_of_subcases
- Number of subcases for which this output is created.
Each iteration section is divided up by subcase. Output for each subcase starts with a line in
the following format:
| Id | Number_of_elements | Frequency | LOAD:Spc_id(Datatype) | subcase_label |
where:
- 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 for 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.
Each subcase section is divided up by element-type. Output for each element-type section starts
with one of the following formats (depending on the elements present in the
model):
| 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.
The format is:
| Eid | value1 | value2 | value3 | etc. |
where:
- Data
- Description
- Eid
- Element identification number.
- value#
- Force result corresponding to the column header.
Comments
- The I/O Option Previously Supported Results controls the frequency of output for analytical results during an optimization.