.gpf file
The .gpf file is an OptiStruct ASCII format results file.
File Creation
Creation of this file is controlled by the GPFORCE I/O Option.
File Contents
| Result | Description |
|---|---|
| Grid point force balance table | Grid point force balance table for linear static analysis. |
File Format
The file is divided up by iteration. Output from each iteration starts with a line in
the following format:
| ITERATION | Iteration_number | |||||||||||||
- Data
- Description
- ITERATION
- Keyword denoting the beginning of a new iteration.
- Iteration_number
- Iteration number.
Each iteration section contains a force balance table for each node, for which this output format was selected, in each linear static subcase.
These tables are given the following header:
| Grid point forces for node | Node_id | Subcase ID = | Subcase_id | |||||||||||
- Data
- Description
- Node_id
- ID of the node to which the force balance table applies.
- Subcase_id
- User-defined subcase ID to which the force balance table applies.
The force information is provided, for each contributing element, constraint or load,
in the following format:
| Force_type | Element_id | x-force | y-force | z-force | x-moment | y-moment | z-moment | |||||||
- Data
- Description
- Force_type
- SPC - Force contribution of single-point constraints.
- Element_id
- Only valid for force contributions from elastic elements. This is the element's ID.
- x-force
- The x-translational component of the force.
- y-force
- The y-translational component of the force.
- z-force
- The z-translational component of the force.
- x-moment
- The x-rotational component of the force.
- y-moment
- The y-rotational component of the force.
- z-moment
- The z-rotational component of the force.